freebsd-skq/sys/dev/advansys/advlib.h

/*
 * Definitions for low level routines and data structures
 * for the Advanced Systems Inc. SCSI controllers chips.
 *
 * Copyright (c) 1996-1997, 1999-2000 Justin T. Gibbs.
 * 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, immediately at the beginning of the file.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
 *
 * $FreeBSD$
 */
/*
 * Ported from:
 * advansys.c - Linux Host Driver for AdvanSys SCSI Adapters
 *     
 * Copyright (c) 1995-1996 Advanced System Products, Inc.
 * All Rights Reserved.
 *   
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that redistributions of source
 * code retain the above copyright notice and this comment without
 * modification.
 */

#ifndef _ADVLIB_H_
#define _ADVLIB_H_

#include <sys/queue.h>

struct cam_path;
union ccb;

typedef u_int8_t target_bit_vector;
#define	TARGET_BIT_VECTOR_SET -1
#define ADV_SCSI_ID_BITS	3
#define ADV_MAX_TID		7
#define ADV_MAX_LUN		7

/* Enumeration of board types */
typedef enum {
	ADV_NONE	= 0x000,
	ADV_ISA		= 0x001,
	ADV_ISAPNP	= 0x003,
	ADV_VL		= 0x004,
	ADV_EISA	= 0x008,
	ADV_PCI		= 0x010,
	ADV_MCA		= 0x020,
	ADV_PCMCIA	= 0x040,
	ADV_ULTRA	= 0x100,
	ADV_WIDE	= 0x200,
	ADV_WIDE32	= 0x400
} adv_btype;

typedef enum {
	ADV_STATE_NONE			= 0x00,
	ADV_RESOURCE_SHORTAGE		= 0x01,
	ADV_IN_TIMEOUT			= 0x02,
	ADV_BUSDMA_BLOCK		= 0x04,
	ADV_BUSDMA_BLOCK_CLEARED	= 0x08
	
} adv_state;

typedef enum {
	ACCB_FREE		= 0x00,
	ACCB_ACTIVE		= 0x01,
	ACCB_ABORT_QUEUED	= 0x02,
	ACCB_RECOVERY_CCB	= 0x04
} adv_ccb_state;

struct adv_ccb_info {
	adv_ccb_state	state;
	bus_dmamap_t	dmamap;
	union ccb*	ccb;
	SLIST_ENTRY(adv_ccb_info) links;
};

#define ccb_cinfo_ptr spriv_ptr0

#define ADV_SYN_XFER_NO			8
#define ADV_SYN_MAX_OFFSET		0x0F
#define ADV_DEF_SDTR_OFFSET		0x0F
#define ADV_DEF_SDTR_INDEX		0x00
#define ADV_OVERRUN_BSIZE		0x00000040
#define ADV_MAX_CDB_LEN			12
#define ADV_MAX_SENSE_LEN		32
#define ADV_MIN_SENSE_LEN		14

#define ADV_TIDLUN_TO_IX(tid, lun) ((tid) | ((lun) << ADV_SCSI_ID_BITS) )
#define ADV_TID_TO_TARGET_MASK(tid)  (0x01 << (tid))
#define ADV_TIX_TO_TARGET_MASK(tix)  (0x01 << ((tix) & ADV_MAX_TID))
#define ADV_TIX_TO_TID(tix)  ((tix) & ADV_MAX_TID)
#define ADV_TID_TO_TIX(tid)  ((tid) & ADV_MAX_TID)
#define ADV_TIX_TO_LUN(tix)  (((tix) >> ADV_SCSI_ID_BITS) & ADV_MAX_LUN )


/*
 * XXX
 * PnP port addresses
 * I believe that these are standard PnP address and should be replaced
 * by the values in a central ISA PnP header file when we get one.
 */
#define ADV_ISA_PNP_PORT_ADDR  (0x279)
#define ADV_ISA_PNP_PORT_WRITE (ADV_ISA_PNP_PORT_ADDR+0x800)

/*
 * Board Signatures
 */
#define ADV_SIGNATURE_WORD			0x0000
#define		 ADV_1000_ID0W			0x04C1
#define		 ADV_1000_ID0W_FIX		0x00C1

#define	ADV_SIGNATURE_BYTE			0x0001
#define		 ADV_1000_ID1B			0x25	

#define	ADV_REG_IH				0x0002
#define		ADV_INS_HALTINT			0x6281
#define		ADV_INS_HALT			0x6280
#define		ADV_INS_SINT			0x6200
#define		ADV_INS_RFLAG_WTM		0x7380

#define ADV_CONFIG_LSW				0x0002
#define		ADV_CFG_LSW_ISA_DMA_CHANNEL	0x0003
#define		ADV_CFG_LSW_HOST_INT_ON		0x0020
#define		ADV_CFG_LSW_BIOS_ON		0x0040
#define		ADV_CFG_LSW_VERA_BURST_ON	0x0080
#define		ADV_CFG_LSW_SCSI_PARITY_ON	0x0800
#define		ADV_CFG_LSW_SCSIID		0x0700
#define		ADV_CFG_LSW_SCSIID_SHIFT	8
#define	ADV_CONFIG_SCSIID(cfg) ((cfg >> ADV_CFG_LSW_SCSIID_SHIFT) & ADV_MAX_TID)
	
/*
 * Chip Revision Number
 */
#define	ADV_NONEISA_CHIP_REVISION		0x0003
#define		ADV_CHIP_MIN_VER_VL	 	0x01
#define		ADV_CHIP_MAX_VER_VL	 	0x07
#define		ADV_CHIP_MIN_VER_PCI	 	0x09
#define		ADV_CHIP_MAX_VER_PCI	 	0x0F
#define		ADV_CHIP_VER_PCI_BIT	  	0x08
#define		ADV_CHIP_VER_PCI_ULTRA_3150  (ADV_CHIP_VER_PCI_BIT | 0x02)
#define		ADV_CHIP_VER_PCI_ULTRA_3050  (ADV_CHIP_VER_PCI_BIT | 0x03)
#define		ADV_CHIP_MIN_VER_ISA		0x11
#define		ADV_CHIP_MIN_VER_ISA_PNP	0x21
#define		ADV_CHIP_MAX_VER_ISA     	0x27
#define		ADV_CHIP_VER_ISA_BIT     	0x30
#define		ADV_CHIP_VER_ISAPNP_BIT  	0x20
#define		ADV_CHIP_VER_ASYN_BUG	 	0x21
#define		ADV_CHIP_MIN_VER_EISA 	 	0x41
#define		ADV_CHIP_MAX_VER_EISA	 	0x47
#define		ADV_CHIP_VER_EISA_BIT		0x40

#define ADV_CONFIG_MSW				0x0004
#define		ADV_CFG_MSW_SCSI_TARGET_ON	0x0080
#define		ADV_CFG_MSW_LRAM_8BITS_ON	0x0800
#define		ADV_CFG_MSW_CLR_MASK		0x30C0

#define	ADV_EEPROM_DATA				0x0006

#define ADV_EEPROM_CMD				0x0007
#define		ADV_EEPROM_CMD_READ		0x80
#define		ADV_EEPROM_CMD_WRITE		0x40
#define		ADV_EEPROM_CMD_WRITE_ENABLE	0x30
#define		ADV_EEPROM_CMD_WRITE_DISABLE	0x00

#define	ADV_DMA_SPEED				0x0007
#define		ADV_DEF_ISA_DMA_SPEED		4
#define	ADV_REG_FLAG				0x0007

#define	ADV_LRAM_DATA				0x0008

#define	ADV_LRAM_ADDR				0x000A

#define ADV_SYN_OFFSET				0x000B

#define	ADV_REG_PROG_COUNTER			0x000C
#define		ADV_MCODE_START_ADDR		0x0080

#define	ADV_REG_IFC				0x000D
#define		ADV_IFC_REG_LOCK		0x00
#define		ADV_IFC_REG_UNLOCK		0x09
#define		ADV_IFC_WR_EN_FILTER		0x10
#define		ADV_IFC_RD_NO_EEPROM		0x10
#define		ADV_IFC_SLEW_RATE		0x20
#define		ADV_IFC_ACT_NEG			0x40
#define		ADV_IFC_INP_FILTER		0x80
#define		ADV_IFC_INIT_DEFAULT  (ADV_IFC_ACT_NEG | ADV_IFC_REG_UNLOCK)
	
#define ADV_CHIP_STATUS				0x000E
#define 	ADV_CSW_TEST1			0x8000
#define 	ADV_CSW_AUTO_CONFIG		0x4000
#define 	ADV_CSW_RESERVED1		0x2000
#define 	ADV_CSW_IRQ_WRITTEN		0x1000
#define 	ADV_CSW_33MHZ_SELECTED		0x0800
#define 	ADV_CSW_TEST2			0x0400
#define 	ADV_CSW_TEST3			0x0200
#define 	ADV_CSW_RESERVED2		0x0100
#define 	ADV_CSW_DMA_DONE		0x0080
#define		ADV_CSW_FIFO_RDY		0x0040
#define 	ADV_CSW_EEP_READ_DONE		0x0020
#define		ADV_CSW_HALTED			0x0010
#define		ADV_CSW_SCSI_RESET_ACTIVE	0x0008
#define		ADV_CSW_PARITY_ERR		0x0004
#define		ADV_CSW_SCSI_RESET_LATCH	0x0002
#define		ADV_CSW_INT_PENDING		0x0001
/*
 * XXX I don't understand the relevence of the naming
 * convention change here.  What does CIW stand for?
 * Perhaps this is to differentiate read and write
 * values?
 */
#define		ADV_CIW_INT_ACK			0x0100
#define		ADV_CIW_TEST1			0x0200
#define		ADV_CIW_TEST2			0x0400
#define		ADV_CIW_SEL_33MHZ		0x0800
#define		ADV_CIW_IRQ_ACT			0x1000
#define		ADV_CIW_CLR_SCSI_RESET_INT	0x1000	

#define	ADV_CHIP_CTRL				0x000F
#define		ADV_CC_CHIP_RESET		0x80
#define		ADV_CC_SCSI_RESET		0x40
#define		ADV_CC_HALT			0x20
#define		ADV_CC_SINGLE_STEP		0x10
#define		ADV_CC_DMA_ENABLE		0x08
#define		ADV_CC_TEST			0x04
#define		ADV_CC_BANK_ONE			0x02	
#define		ADV_CC_DIAG			0x01
	
#define ADV_HALTCODE_W				0x0040
#define ADV_STOP_CODE_B				0x0034
#define		ADV_STOP_REQ_RISC_STOP		0x01
#define		ADV_STOP_ACK_RISC_STOP		0x03
#define		ADV_STOP_CLEAN_UP_BUSY_Q	0x10
#define		ADV_STOP_CLEAN_UP_DISC_Q	0x20
#define		ADV_STOP_HOST_REQ_RISC_HALT	0x40

/*
 * EEPROM routine constants
 * XXX What about wide controllers?
 * Surely they have space for 8 more targets.
 */	
#define	ADV_EEPROM_CFG_BEG_VL		2
#define	ADV_EEPROM_MAX_ADDR_VL		15
#define	ADV_EEPROM_CFG_BEG		32
#define	ADV_EEPROM_MAX_ADDR		45
#define	ADV_EEPROM_MAX_RETRY		20
	
struct adv_eeprom_config {
	u_int16_t	cfg_lsw;
	
	u_int16_t	cfg_msw;

	u_int8_t	init_sdtr;
	u_int8_t	disc_enable;

	u_int8_t	use_cmd_qng;
	u_int8_t        start_motor;
	
	u_int8_t	max_total_qng;
	u_int8_t	max_tag_qng;
	
	u_int8_t	bios_scan;
	u_int8_t	power_up_wait;

	u_int8_t	no_scam;
	u_int8_t        scsi_id_dma_speed;
#define		EEPROM_SCSI_ID_MASK	0x0F
#define		EEPROM_DMA_SPEED_MASK	0xF0
#define		EEPROM_DMA_SPEED(ep)				\
		(((ep).scsi_id_dma_speed & EEPROM_DMA_SPEED_MASK) >> 4)
#define		EEPROM_SET_DMA_SPEED(ep, speed)			\
		(ep).scsi_id_dma_speed &= ~EEPROM_DMA_SPEED_MASK;	\
		(ep).scsi_id_dma_speed |=				\
		    (((speed) << 4) & EEPROM_DMA_SPEED_MASK)
#define		EEPROM_SCSIID(ep) ((ep).scsi_id_dma_speed & EEPROM_SCSI_ID_MASK)
#define		EEPROM_SET_SCSIID(ep, id)			\
		(ep).scsi_id_dma_speed &= ~EEPROM_SCSI_ID_MASK; \
		(ep).scsi_id_dma_speed |= ((id) & EEPROM_SCSI_ID_MASK)
	u_int8_t	sdtr_data[8];
	u_int8_t	adapter_info[6];

	u_int16_t	cntl;

	u_int16_t	chksum;
};

/* Bank 1 */
#define	ADV_SEQ_ACCUM				0x0000
#define	ADV_QUEUE_ELEMENT_INDEX			0x0001
#define	ADV_SEQ_INSTRUCTION_HOLD		0x0002
#define	ADV_QUEUE_ELEMENT_POINTER		0x0003
#define	ADV_HOST_DATA_FIFO_L			0x0004
#define ADV_HOST_SCSIID				0x0005
#define	ADV_HOST_DATA_FIFO_H			0x0006
#define ADV_SCSI_CONTROL			0x0009
#define		SC_SEL				0x80
#define		SC_BSY				0x40
#define		SC_ACK				0x20
#define		SC_REQ				0x10
#define		SC_ATN				0x08
#define		SC_IO				0x04
#define		SC_CD				0x02
#define		SC_MSG				0x01
#define	ADV_SCSIDATL				0x000B
#define	ADV_DMA_TRANSFER_CNT			0x000C
#define	ADV_DMA_TRANSFER_CNT1			0x000E

/*
 * Instruction data and code segment addresses,
 * and transaction address translation (queues).
 * All addresses refer to on board LRAM.
 */
#define ADV_DATA_SEC_BEG		0x0080
#define ADV_DATA_SEC_END		0x0080
#define ADV_CODE_SEC_BEG		0x0080
#define ADV_CODE_SEC_END		0x0080
#define ADV_QADR_BEG			0x4000
#define ADV_QADR_END			0x7FFF
#define ADV_QLAST_ADR			0x7FC0
#define ADV_QBLK_SIZE			0x40
#define ADV_BIOS_DATA_QBEG		0xF8
#define ADV_MAX_QNO			0xF8
#define ADV_QADR_USED (ADV_MAX_QNO * 64)
#define ADV_QNO_TO_QADDR(q_no) ((ADV_QADR_BEG) + ((u_int16_t)(q_no) << 6))

#define ADV_MIN_ACTIVE_QNO		0x01
#define ADV_QLINK_END			0xFF

#define ADV_MAX_SG_QUEUE		5
#define ADV_SG_LIST_PER_Q		7
#define ADV_MAX_SG_LIST			(1 + ((ADV_SG_LIST_PER_Q) * (ADV_MAX_SG_QUEUE)))

#define ADV_MIN_REMAIN_Q		0x02
#define ADV_DEF_MAX_TOTAL_QNG		0xF0
#define ADV_MIN_TAG_Q_PER_DVC		0x04
#define ADV_DEF_TAG_Q_PER_DVC		0x04
#define ADV_MIN_FREE_Q			ADV_MIN_REMAIN_Q
#define ADV_MIN_TOTAL_QNG		((ADV_MAX_SG_QUEUE)+(ADV_MIN_FREE_Q))
#define ADV_MAX_TOTAL_QNG		240
#define ADV_MAX_INRAM_TAG_QNG		16
#define ADV_MAX_PCI_INRAM_TOTAL_QNG	20
#define	ADV_MAX_PCI_ULTRA_INRAM_TOTAL_QNG 16
#define	ADV_MAX_PCI_ULTRA_INRAM_TAG_QNG	8

#define ADV_DEF_IRQ_NO			10
#define ADV_MAX_IRQ_NO			15
#define ADV_MIN_IRQ_NO			10

#define ADV_SCSIQ_CPY_BEG		4
#define ADV_SCSIQ_SGHD_CPY_BEG		2

/* SCSIQ Microcode representation offsets */
#define ADV_SCSIQ_B_FWD			0
#define ADV_SCSIQ_B_BWD			1
#define ADV_SCSIQ_B_STATUS		2
#define ADV_SCSIQ_B_QNO			3
#define ADV_SCSIQ_B_CNTL		4
#define ADV_SCSIQ_B_SG_QUEUE_CNT	5
#define	ADV_SCSIQ_B_LIST_CNT		6
#define	ADV_SCSIQ_B_CUR_LIST_CNT	7
#define	ADV_SCSIQ_D_DATA_ADDR		8
#define	ADV_SCSIQ_D_DATA_CNT		12
#define	ADV_SCSIQ_B_SENSE_LEN		20
#define	ADV_SCSIQ_DONE_INFO_BEG		22
#define	ADV_SCSIQ_D_CINFO_IDX		22
#define	ADV_SCSIQ_B_TARGET_IX		26
#define	ADV_SCSIQ_B_CDB_LEN		28
#define	ADV_SCSIQ_B_TAG_CODE		29
#define	ADV_SCSIQ_W_VM_ID		30
#define	ADV_SCSIQ_DONE_STATUS		32
#define	ADV_SCSIQ_HOST_STATUS		33
#define	ADV_SCSIQ_SCSI_STATUS		34
#define	ADV_SCSIQ_CDB_BEG		36
#define ADV_SCSIQ_B_FIRST_SG_QK_QP	48
#define	ADV_SCSIQ_B_SG_WK_QP		49
#define	ADV_SCSIQ_B_SG_WK_IX		50
#define	ADV_SCSIQ_W_ALT_DC1		52
#define	ADV_SCSIQ_DW_REMAIN_XFER_ADDR	56
#define	ADV_SCSIQ_DW_REMAIN_XFER_CNT	60

/* LRAM Offsets */
#define ADVV_MSGOUT_BEG			0x0000
#define ADVV_MSGOUT_SDTR_PERIOD		(ADVV_MSGOUT_BEG+3)
#define ADVV_MSGOUT_SDTR_OFFSET		(ADVV_MSGOUT_BEG+4)

#define	ADVV_BREAK_SAVED_CODE		0x0006

#define ADVV_MSGIN_BEG			(ADVV_MSGOUT_BEG+8)
#define ADVV_MSGIN_SDTR_PERIOD		(ADVV_MSGIN_BEG+3)
#define ADVV_MSGIN_SDTR_OFFSET		(ADVV_MSGIN_BEG+4)

#define ADVV_SDTR_DATA_BEG		(ADVV_MSGIN_BEG+8)
#define ADVV_SDTR_DONE_BEG		(ADVV_SDTR_DATA_BEG+8)
#define ADVV_MAX_DVC_QNG_BEG		0x0020

#define	ADVV_BREAK_ADDR			0x0028
#define	ADVV_BREAK_NOTIFY_COUNT		0x002A
#define	ADVV_BREAK_CONTROL		0x002C
#define	ADVV_BREAK_HIT_COUNT		0x002E

#define ADVV_ASCDVC_ERR_CODE_W		0x0030
#define ADVV_MCODE_CHKSUM_W		0x0032
#define ADVV_MCODE_SIZE_W		0x0034
#define ADVV_STOP_CODE_B		0x0036
#define ADVV_DVC_ERR_CODE_B		0x0037

#define ADVV_OVERRUN_PADDR_D		0x0038
#define ADVV_OVERRUN_BSIZE_D		0x003C

#define ADVV_HALTCODE_W			0x0040
#define		ADV_HALT_EXTMSG_IN			0x8000
#define		ADV_HALT_CHK_CONDITION			0x8100
#define		ADV_HALT_SS_QUEUE_FULL			0x8200
#define		ADV_HALT_DISABLE_ASYN_USE_SYN_FIX	0x8300
#define		ADV_HALT_ENABLE_ASYN_USE_SYN_FIX	0x8400
#define		ADV_HALT_SDTR_REJECTED			0x4000
#define		ADV_HALT_HOST_COPY_SG_LIST_TO_RISC	0x2000

#define ADVV_CHKSUM_W			0x0042
#define ADVV_MC_DATE_W			0x0044
#define ADVV_MC_VER_W			0x0046
#define ADVV_NEXTRDY_B			0x0048
#define ADVV_DONENEXT_B			0x0049
#define ADVV_USE_TAGGED_QNG_B		0x004A
#define ADVV_SCSIBUSY_B			0x004B
#define	ADVV_Q_DONE_IN_PROGRESS_B	0x004C
#define ADVV_CURCDB_B			0x004D
#define ADVV_RCLUN_B			0x004E
#define ADVV_BUSY_QHEAD_B		0x004F
#define ADVV_DISC1_QHEAD_B		0x0050

#define ADVV_DISC_ENABLE_B		0x0052
#define ADVV_CAN_TAGGED_QNG_B		0x0053
#define ADVV_HOSTSCSI_ID_B		0x0055
#define ADVV_MCODE_CNTL_B		0x0056
#define ADVV_NULL_TARGET_B		0x0057

#define ADVV_FREE_Q_HEAD_W		0x0058
#define ADVV_DONE_Q_TAIL_W		0x005A
#define ADVV_FREE_Q_HEAD_B		(ADVV_FREE_Q_HEAD_W+1)
#define ADVV_DONE_Q_TAIL_B		(ADVV_DONE_Q_TAIL_W+1)

#define ADVV_HOST_FLAG_B		0x005D
#define		ADV_HOST_FLAG_IN_ISR	0x01
#define		ADV_HOST_FLAG_ACK_INT	0x02


#define ADVV_TOTAL_READY_Q_B		  0x0064
#define ADVV_VER_SERIAL_B		  0x0065
#define ADVV_HALTCODE_SAVED_W		  0x0066
#define ADVV_WTM_FLAG_B			  0x0068
#define ADVV_RISC_FLAG_B		  0x006A
#define		ADV_RISC_FLAG_GEN_INT     0x01
#define		ADV_RISC_FLAG_REQ_SG_LIST 0x02

#define ADVV_REQ_SG_LIST_QP		0x006B

#define ADV_TRANS_CUR		0x01	/* Modify current neogtiation status */
#define ADV_TRANS_ACTIVE	0x03	/* Assume this is the active target */
#define ADV_TRANS_GOAL		0x04	/* Modify negotiation goal */
#define ADV_TRANS_USER		0x08	/* Modify user negotiation settings */

struct adv_transinfo {
	u_int8_t period;
	u_int8_t offset;
};

struct adv_target_transinfo {
	struct adv_transinfo current;
	struct adv_transinfo goal;
	struct adv_transinfo user;
};

struct adv_softc {
	device_t		dev;
	bus_space_tag_t		 tag;
	bus_space_handle_t	 bsh;
	struct cam_sim		*sim;
	LIST_HEAD(, ccb_hdr)	 pending_ccbs;
	struct adv_ccb_info	*ccb_infos;
	SLIST_HEAD(, adv_ccb_info) free_ccb_infos;
	bus_dma_tag_t		 parent_dmat;
	bus_dma_tag_t		 buffer_dmat;
	bus_dma_tag_t		 sense_dmat;
	bus_dmamap_t		 sense_dmamap;
	struct scsi_sense_data	*sense_buffers;
	bus_addr_t		 sense_physbase;
	bus_addr_t		 overrun_physbase;
	adv_btype		 type;
	struct			 adv_target_transinfo tinfo[8];
	target_bit_vector	 fix_asyn_xfer;
	target_bit_vector	 fix_asyn_xfer_always;
	target_bit_vector	 disc_enable;
	target_bit_vector	 user_disc_enable;
	target_bit_vector	 cmd_qng_enabled;
	target_bit_vector	 user_cmd_qng_enabled;
	u_int16_t		 control;
#define		ADV_CNTL_INITIATOR		0x0001
#define		ADV_CNTL_BIOS_GT_1GB		0x0002
#define		ADV_CNTL_BIOS_GT_2_DISK		0x0004
#define		ADV_CNTL_BIOS_REMOVABLE		0x0008
#define		ADV_CNTL_NO_SCAM		0x0010
#define		ADV_CNTL_INT_MULTI_Q		0x0080
#define		ADV_CNTL_NO_LUN_SUPPORT		0x0040
#define		ADV_CNTL_NO_VERIFY_COPY		0x0100
#define		ADV_CNTL_RESET_SCSI		0x0200
#define		ADV_CNTL_INIT_INQUIRY		0x0400
#define		ADV_CNTL_INIT_VERBOSE		0x0800
#define		ADV_CNTL_SCSI_PARITY		0x1000
#define		ADV_CNTL_BURST_MODE		0x2000
#define		ADV_CNTL_SDTR_ENABLE_ULTRA	0x4000
	
	u_int16_t		 bug_fix_control;
#define		ADV_BUG_FIX_IF_NOT_DWB		0x0001
#define		ADV_BUG_FIX_ASYN_USE_SYN	0x0002
	
	adv_state		 state;
	struct cam_path		*path;
	int			 unit;
	int			 init_level;
	u_int32_t		 max_dma_addr;
	u_int32_t		 max_dma_count;
	u_int8_t		 isa_dma_speed;
	u_int8_t		 isa_dma_channel;
	u_int8_t		 scsi_id;
	u_int8_t		 chip_version;
	u_int8_t		 max_tags_per_target;
	u_int8_t		 max_openings;
	u_int8_t		 cur_active;
	u_int8_t		 openings_needed;
	u_int8_t		 ccb_infos_allocated;
	u_int8_t		*sdtr_period_tbl;
	u_int8_t		 sdtr_period_tbl_size;
};

/*
 * Structures for talking to the RISC engine.
 */
struct adv_scsiq_1 {
	u_int8_t		status;
#define		QS_FREE        0x00
#define		QS_READY       0x01
#define		QS_DISC1       0x02
#define		QS_DISC2       0x04
#define		QS_BUSY        0x08
#define		QS_ABORTED     0x40
#define		QS_DONE        0x80
	
	u_int8_t		q_no;		/*
						 * Queue ID of the first queue
						 * used in this transaction.
						 */
	u_int8_t		cntl;
#define		QC_NO_CALLBACK   0x01
#define		QC_SG_SWAP_QUEUE 0x02
#define		QC_SG_HEAD       0x04
#define		QC_DATA_IN       0x08
#define		QC_DATA_OUT      0x10
#define		QC_URGENT        0x20
#define		QC_MSG_OUT       0x40
#define		QC_REQ_SENSE     0x80
	
	u_int8_t		sg_queue_cnt;	/* Number of SG entries */

	u_int8_t		target_id;	/* target id as a bit vector */
	u_int8_t		target_lun;	/* LUN - taken from our xs */

	u_int32_t		data_addr;	/*
						 * physical addres of first
						 * (possibly only) segment
						 * to transfer.
						 */
	u_int32_t		data_cnt;	/*
						 * byte count of the first
						 * (possibly only) segment
						 * to transfer.
						 */
	u_int32_t		sense_addr;	/*
						 * physical address of the sense
						 * buffer.
						 */
	u_int8_t		sense_len;	/* length of sense buffer */
	u_int8_t		extra_bytes;
};

struct adv_scsiq_2 {
	u_int32_t		ccb_index;	/* Index to our CCB Info */
	u_int8_t		target_ix;      /* Combined TID and LUN */

	u_int8_t		flag;
	u_int8_t		cdb_len;	/*
						 * Number of bytes in the SCSI
						 * command to execute.
						 */
	u_int8_t		tag_code;	/*
						 * Tag type for this transaction
						 * (SIMPLE, ORDERED, HEAD )
						 */
#define		ADV_TAG_FLAG_EXTRA_BYTES               0x10
#define		ADV_TAG_FLAG_DISABLE_DISCONNECT        0x04
#define		ADV_TAG_FLAG_DISABLE_ASYN_USE_SYN_FIX  0x08
#define		ADV_TAG_FLAG_DISABLE_CHK_COND_INT_HOST 0x40
	
	u_int16_t		vm_id;
};

struct adv_scsiq_3 {
	u_int8_t		done_stat;
#define		QD_IN_PROGRESS			0x00
#define		QD_NO_ERROR			0x01
#define		QD_ABORTED_BY_HOST		0x02
#define		QD_WITH_ERROR			0x04
#define		QD_INVALID_REQUEST		0x80
#define		QD_INVALID_HOST_NUM		0x81
#define		QD_INVALID_DEVICE		0x82
#define		QD_ERR_INTERNAL			0xFF
	
	u_int8_t		host_stat;
#define		QHSTA_NO_ERROR			0x00
#define		QHSTA_M_SEL_TIMEOUT		0x11
#define		QHSTA_M_DATA_OVER_RUN		0x12
#define		QHSTA_M_DATA_UNDER_RUN		0x12
#define		QHSTA_M_UNEXPECTED_BUS_FREE	0x13
#define		QHSTA_M_BAD_BUS_PHASE_SEQ	0x14

#define		QHSTA_D_QDONE_SG_LIST_CORRUPTED	0x21
#define		QHSTA_D_ASC_DVC_ERROR_CODE_SET	0x22
#define		QHSTA_D_HOST_ABORT_FAILED	0x23
#define		QHSTA_D_EXE_SCSI_Q_FAILED	0x24
#define		QHSTA_D_EXE_SCSI_Q_BUSY_TIMEOUT	0x25
#define		QHSTA_D_ASPI_NO_BUF_POOL	0x26

#define		QHSTA_M_WTM_TIMEOUT		0x41
#define		QHSTA_M_BAD_CMPL_STATUS_IN	0x42
#define		QHSTA_M_NO_AUTO_REQ_SENSE	0x43
#define		QHSTA_M_AUTO_REQ_SENSE_FAIL	0x44
#define		QHSTA_M_TARGET_STATUS_BUSY	0x45
#define		QHSTA_M_BAD_TAG_CODE		0x46

#define		QHSTA_M_BAD_QUEUE_FULL_OR_BUSY	0x47
#define		QHSTA_M_HUNG_REQ_SCSI_BUS_RESET	0x48

#define		QHSTA_D_LRAM_CMP_ERROR		0x81
	
#define		QHSTA_M_MICRO_CODE_ERROR_HALT	0xA1
	
	u_int8_t		scsi_stat;
	u_int8_t		scsi_msg;
};

struct adv_scsiq_4 {
	u_int8_t		cdb[ADV_MAX_CDB_LEN];
	u_int8_t		y_first_sg_list_qp;
	u_int8_t		y_working_sg_qp;
	u_int8_t		y_working_sg_ix;
	u_int8_t		y_res;
	u_int16_t		x_req_count;
	u_int16_t		x_reconnect_rtn;
	u_int32_t		x_saved_data_addr;
	u_int32_t		x_saved_data_cnt;
};

struct adv_q_done_info {
	struct adv_scsiq_2	d2;
	struct adv_scsiq_3	d3;
	u_int8_t		q_status;
	u_int8_t		q_no;
	u_int8_t		cntl;
	u_int8_t		sense_len;
	u_int8_t		extra_bytes;
	u_int8_t		res;
	u_int32_t		remain_bytes;
};

struct adv_sg_entry {
	u_int32_t		addr;
	u_int32_t		bytes;
};

struct adv_sg_head {
	u_int16_t		entry_cnt;	/*
						 * Number of SG entries
						 * in this list
						 */

	u_int16_t		queue_cnt;	/*
						 * Number of queues required
						 * to store entry_cnt
						 * SG entries.
						 */

	u_int16_t		entry_to_copy;	/*
						 * Number of SG entries to
						 * copy to the board.
						 */
	u_int16_t		res;
	struct adv_sg_entry	*sg_list;
};

#define QCX_SORT        (0x0001)
#define QCX_COALEASE    (0x0002)

struct adv_scsi_q {
	struct adv_scsiq_1	q1;
	struct adv_scsiq_2	q2;
	u_int8_t		*cdbptr;	/*
						 * Pointer to the SCSI command
						 * to execute.
						 */

	struct adv_sg_head	*sg_head;	/*
						 * Pointer to possible SG list
						 */
};

struct adv_scsi_req_q {
	struct adv_scsiq_1	r1;
	struct adv_scsiq_2	r2;
	u_int8_t		*cdbptr;
	struct adv_sg_head	*sg_head;
	u_int8_t		*sense_ptr;
	struct adv_scsiq_3	r3;
	u_int8_t		cdb[ADV_MAX_CDB_LEN];
	u_int8_t		sense[ADV_MIN_SENSE_LEN];
};

struct adv_risc_q {
	u_int8_t		fwd;
	u_int8_t		bwd;
	struct adv_scsiq_1	i1;
	struct adv_scsiq_2	i2;
	struct adv_scsiq_3	i3;
	struct adv_scsiq_4	i4;
};

struct adv_sg_list_q {
	u_int8_t		seq_no;
	u_int8_t		q_no;
	u_int8_t		cntl;
#define		QCSG_SG_XFER_LIST  0x02
#define		QCSG_SG_XFER_MORE  0x04
#define		QCSG_SG_XFER_END   0x08
	
	u_int8_t		sg_head_qp;
	u_int8_t		sg_list_cnt;
	u_int8_t		sg_cur_list_cnt;
};
#define ADV_SGQ_B_SG_CNTL		4
#define ADV_SGQ_B_SG_HEAD_QP		5
#define ADV_SGQ_B_SG_LIST_CNT		6
#define ADV_SGQ_B_SG_CUR_LIST_CNT	7
#define ADV_SGQ_LIST_BEG		8

struct asc_risc_sg_list_q {
	u_int8_t		fwd;
	u_int8_t		bwd;
	struct adv_sg_list_q	sg;
	struct adv_sg_entry	sg_list[ADV_SG_LIST_PER_Q];
};

/* Chip Register functions */
void	  adv_set_bank(struct adv_softc *adv, u_int8_t bank);

/* LRAM routines */
u_int8_t  adv_read_lram_8(struct adv_softc *adv, u_int16_t addr);
void	  adv_write_lram_8(struct adv_softc *adv, u_int16_t addr,
			   u_int8_t value);
u_int16_t adv_read_lram_16(struct adv_softc *adv, u_int16_t addr);
void	  adv_write_lram_16(struct adv_softc *adv, u_int16_t addr,
			    u_int16_t value);

/* Intialization */
int	  adv_find_signature(bus_space_tag_t tag, bus_space_handle_t bsh);
void	  adv_lib_init(struct adv_softc *adv);

u_int16_t adv_get_eeprom_config(struct adv_softc *adv,
				struct adv_eeprom_config *eeprom_config);
int	  adv_set_eeprom_config(struct adv_softc *adv,
				struct adv_eeprom_config *eeprom_config);
int	  adv_reset_chip(struct adv_softc *adv, int reset_bus);
int	  adv_test_external_lram(struct adv_softc* adv);
int	  adv_init_lram_and_mcode(struct adv_softc *adv);
u_int8_t  adv_get_chip_irq(struct adv_softc *adv);
u_int8_t  adv_set_chip_irq(struct adv_softc *adv, u_int8_t irq_no);
void	  adv_set_chip_scsiid(struct adv_softc *adv, int new_id);

/* Queue handling and execution */
int	  adv_execute_scsi_queue(struct adv_softc *adv,
				 struct adv_scsi_q *scsiq,
				 u_int32_t datalen);
u_int8_t  adv_copy_lram_doneq(struct adv_softc *adv, u_int16_t q_addr,
			      struct adv_q_done_info *scsiq, u_int32_t max_dma_count);

/* Chip Control */
int	  adv_start_chip(struct adv_softc *adv);
void	  adv_start_execution(struct adv_softc *adv);
int	  adv_stop_execution(struct adv_softc *adv);
int	  adv_stop_chip(struct adv_softc *adv);
int	  adv_is_chip_halted(struct adv_softc *adv);

/* Interrupt processing */
void	  adv_ack_interrupt(struct adv_softc *adv);
void	  adv_isr_chip_halted(struct adv_softc *adv);

/* SDTR Conversion */
void	  adv_set_syncrate(struct adv_softc *adv, struct cam_path *path,
			   u_int target_id, u_int period, u_int offset,
			   u_int type);
void	  adv_sdtr_to_period_offset(struct adv_softc *adv,
				    u_int8_t sync_data, u_int8_t *period,
				    u_int8_t *offset, int tid);
u_int8_t  adv_period_offset_to_sdtr(struct adv_softc *adv, u_int *period,
				    u_int *offset, int tid);

/* Error recovery */
union ccb;
int	  adv_abort_ccb(struct adv_softc *adv, int target, int lun,
			union ccb *ccb, u_int32_t status, int queued_only);
int	  adv_reset_bus(struct adv_softc *adv, int initiate_reset);

/* Async event callback */
void	advasync(void *callback_arg, u_int32_t code,
		 struct cam_path *path, void *arg);

#define ADV_INB(adv, offset)			\
	bus_space_read_1((adv)->tag, (adv)->bsh, offset)
#define ADV_INW(adv, offset)			\
	bus_space_read_2((adv)->tag, (adv)->bsh, offset)
#define ADV_INSB(adv, offset, valp, count)	\
	bus_space_read_multi_1((adv)->tag, (adv)->bsh, offset, valp, count)

/* These controllers seem to have problems with PIO on some fast processors */
static __inline void ADV_INSW(struct adv_softc *, u_int, u_int16_t *, u_int);
static __inline void
ADV_INSW(struct adv_softc *adv, u_int offset, u_int16_t *valp, u_int count)
{
	while (count--)
		*valp++ = bus_space_read_2(adv->tag, adv->bsh, offset);
}

#define ADV_OUTB(adv, offset, val)		\
	bus_space_write_1((adv)->tag, (adv)->bsh, offset, val)
#define ADV_OUTW(adv, offset, val)		\
	bus_space_write_2((adv)->tag, (adv)->bsh, offset, val)

/* These controllers seem to have problems with PIO on some fast processors */
static __inline void ADV_OUTSW(struct adv_softc *, u_int, u_int16_t *, u_int);
static __inline void
ADV_OUTSW(struct adv_softc *adv, u_int offset, u_int16_t *valp, u_int count)
{
	while (count--)
		bus_space_write_2(adv->tag, adv->bsh, offset, *valp++);
}

#endif /* _ADVLIB_H_ */