/drivers/media/

tion> The LITMUS^RT kernel.Bjoern Brandenburg
aboutsummaryrefslogblamecommitdiffstats
path: root/drivers/scsi/advansys.c
blob: 3c2d6888bb8c36326e79703c69663486228d85c4 (plain) (tree)
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#define DRV_NAME "advansys"
#define ASC_VERSION "3.4"	/* AdvanSys Driver Version */

/*
 * advansys.c - Linux Host Driver for AdvanSys SCSI Adapters
 *
 * Copyright (c) 1995-2000 Advanced System Products, Inc.
 * Copyright (c) 2000-2001 ConnectCom Solutions, Inc.
 * Copyright (c) 2007 Matthew Wilcox <matthew@wil.cx>
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

/*
 * As of March 8, 2000 Advanced System Products, Inc. (AdvanSys)
 * changed its name to ConnectCom Solutions, Inc.
 * On June 18, 2001 Initio Corp. acquired ConnectCom's SCSI assets
 */

#include <linux/module.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/isa.h>
#include <linux/eisa.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/dma-mapping.h>

#include <asm/io.h>
#include <asm/system.h>
#include <asm/dma.h>

#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsi.h>
#include <scsi/scsi_host.h>

/* FIXME:
 *
 *  1. Although all of the necessary command mapping places have the
 *     appropriate dma_map.. APIs, the driver still processes its internal
 *     queue using bus_to_virt() and virt_to_bus() which are illegal under
 *     the API.  The entire queue processing structure will need to be
 *     altered to fix this.
 *  2. Need to add memory mapping workaround. Test the memory mapping.
 *     If it doesn't work revert to I/O port access. Can a test be done
 *     safely?
 *  3. Handle an interrupt not working. Keep an interrupt counter in
 *     the interrupt handler. In the timeout function if the interrupt
 *     has not occurred then print a message and run in polled mode.
 *  4. Need to add support for target mode commands, cf. CAM XPT.
 *  5. check DMA mapping functions for failure
 *  6. Use scsi_transport_spi
 *  7. advansys_info is not safe against multiple simultaneous callers
 *  8. Add module_param to override ISA/VLB ioport array
 */
#warning this driver is still not properly converted to the DMA API

/* Enable driver /proc statistics. */
#define ADVANSYS_STATS

/* Enable driver tracing. */
#undef ADVANSYS_DEBUG

/*
 * Portable Data Types
 *
 * Any instance where a 32-bit long or pointer type is assumed
 * for precision or HW defined structures, the following define
 * types must be used. In Linux the char, short, and int types
 * are all consistent at 8, 16, and 32 bits respectively. Pointers
 * and long types are 64 bits on Alpha and UltraSPARC.
 */
#define ASC_PADDR __u32		/* Physical/Bus address data type. */
#define ASC_VADDR __u32		/* Virtual address data type. */
#define ASC_DCNT  __u32		/* Unsigned Data count type. */
#define ASC_SDCNT __s32		/* Signed Data count type. */

typedef unsigned char uchar;

#ifndef TRUE
#define TRUE     (1)
#endif
#ifndef FALSE
#define FALSE    (0)
#endif

#define ERR      (-1)
#define UW_ERR   (uint)(0xFFFF)
#define isodd_word(val)   ((((uint)val) & (uint)0x0001) != 0)

#define PCI_VENDOR_ID_ASP		0x10cd
#define PCI_DEVICE_ID_ASP_1200A		0x1100
#define PCI_DEVICE_ID_ASP_ABP940	0x1200
#define PCI_DEVICE_ID_ASP_ABP940U	0x1300
#define PCI_DEVICE_ID_ASP_ABP940UW	0x2300
#define PCI_DEVICE_ID_38C0800_REV1	0x2500
#define PCI_DEVICE_ID_38C1600_REV1	0x2700

/*
 * Enable CC_VERY_LONG_SG_LIST to support up to 64K element SG lists.
 * The SRB structure will have to be changed and the ASC_SRB2SCSIQ()
 * macro re-defined to be able to obtain a ASC_SCSI_Q pointer from the
 * SRB structure.
 */
#define CC_VERY_LONG_SG_LIST 0
#define ASC_SRB2SCSIQ(srb_ptr)  (srb_ptr)

#define PortAddr                 unsigned int	/* port address size  */
#define inp(port)                inb(port)
#define outp(port, byte)         outb((byte), (port))

#define inpw(port)               inw(port)
#define outpw(port, word)        outw((word), (port))

#define ASC_MAX_SG_QUEUE    7
#define ASC_MAX_SG_LIST     255

#define ASC_CS_TYPE  unsigned short

#define ASC_IS_ISA          (0x0001)
#define ASC_IS_ISAPNP       (0x0081)
#define ASC_IS_EISA         (0x0002)
#define ASC_IS_PCI          (0x0004)
#define ASC_IS_PCI_ULTRA    (0x0104)
#define ASC_IS_PCMCIA       (0x0008)
#define ASC_IS_MCA          (0x0020)
#define ASC_IS_VL           (0x0040)
#define ASC_IS_WIDESCSI_16  (0x0100)
#define ASC_IS_WIDESCSI_32  (0x0200)
#define ASC_IS_BIG_ENDIAN   (0x8000)

#define ASC_CHIP_MIN_VER_VL      (0x01)
#define ASC_CHIP_MAX_VER_VL      (0x07)
#define ASC_CHIP_MIN_VER_PCI     (0x09)
#define ASC_CHIP_MAX_VER_PCI     (0x0F)
#define ASC_CHIP_VER_PCI_BIT     (0x08)
#define ASC_CHIP_MIN_VER_ISA     (0x11)
#define ASC_CHIP_MIN_VER_ISA_PNP (0x21)
#define ASC_CHIP_MAX_VER_ISA     (0x27)
#define ASC_CHIP_VER_ISA_BIT     (0x30)
#define ASC_CHIP_VER_ISAPNP_BIT  (0x20)
#define ASC_CHIP_VER_ASYN_BUG    (0x21)
#define ASC_CHIP_VER_PCI             0x08
#define ASC_CHIP_VER_PCI_ULTRA_3150  (ASC_CHIP_VER_PCI | 0x02)
#define ASC_CHIP_VER_PCI_ULTRA_3050  (ASC_CHIP_VER_PCI | 0x03)
#define ASC_CHIP_MIN_VER_EISA (0x41)
#define ASC_CHIP_MAX_VER_EISA (0x47)
#define ASC_CHIP_VER_EISA_BIT (0x40)
#define ASC_CHIP_LATEST_VER_EISA   ((ASC_CHIP_MIN_VER_EISA - 1) + 3)
#define ASC_MAX_VL_DMA_COUNT    (0x07FFFFFFL)
#define ASC_MAX_PCI_DMA_COUNT   (0xFFFFFFFFL)
#define ASC_MAX_ISA_DMA_COUNT   (0x00FFFFFFL)

#define ASC_SCSI_ID_BITS  3
#define ASC_SCSI_TIX_TYPE     uchar
#define ASC_ALL_DEVICE_BIT_SET  0xFF
#define ASC_SCSI_BIT_ID_TYPE  uchar
#define ASC_MAX_TID       7
#define ASC_MAX_LUN       7
#define ASC_SCSI_WIDTH_BIT_SET  0xFF
#define ASC_MAX_SENSE_LEN   32
#define ASC_MIN_SENSE_LEN   14
#define ASC_SCSI_RESET_HOLD_TIME_US  60

/*
 * Narrow boards only support 12-byte commands, while wide boards
 * extend to 16-byte commands.
 */
#define ASC_MAX_CDB_LEN     12
#define ADV_MAX_CDB_LEN     16

#define MS_SDTR_LEN    0x03
#define MS_WDTR_LEN    0x02

#define ASC_SG_LIST_PER_Q   7
#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
#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
#define QCSG_SG_XFER_LIST  0x02
#define QCSG_SG_XFER_MORE  0x04
#define QCSG_SG_XFER_END   0x08
#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
#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
#define ASC_FLAG_SCSIQ_REQ        0x01
#define ASC_FLAG_BIOS_SCSIQ_REQ   0x02
#define ASC_FLAG_BIOS_ASYNC_IO    0x04
#define ASC_FLAG_SRB_LINEAR_ADDR  0x08
#define ASC_FLAG_WIN16            0x10
#define ASC_FLAG_WIN32            0x20
#define ASC_FLAG_ISA_OVER_16MB    0x40
#define ASC_FLAG_DOS_VM_CALLBACK  0x80
#define ASC_TAG_FLAG_EXTRA_BYTES               0x10
#define ASC_TAG_FLAG_DISABLE_DISCONNECT        0x04
#define ASC_TAG_FLAG_DISABLE_ASYN_USE_SYN_FIX  0x08
#define ASC_TAG_FLAG_DISABLE_CHK_COND_INT_HOST 0x40
#define ASC_SCSIQ_CPY_BEG              4
#define ASC_SCSIQ_SGHD_CPY_BEG         2
#define ASC_SCSIQ_B_FWD                0
#define ASC_SCSIQ_B_BWD                1
#define ASC_SCSIQ_B_STATUS             2
#define ASC_SCSIQ_B_QNO                3
#define ASC_SCSIQ_B_CNTL               4
#define ASC_SCSIQ_B_SG_QUEUE_CNT       5
#define ASC_SCSIQ_D_DATA_ADDR          8
#define ASC_SCSIQ_D_DATA_CNT          12
#define ASC_SCSIQ_B_SENSE_LEN         20
#define ASC_SCSIQ_DONE_INFO_BEG       22
#define ASC_SCSIQ_D_SRBPTR            22
#define ASC_SCSIQ_B_TARGET_IX         26
#define ASC_SCSIQ_B_CDB_LEN           28
#define ASC_SCSIQ_B_TAG_CODE          29
#define ASC_SCSIQ_W_VM_ID             30
#define ASC_SCSIQ_DONE_STATUS         32
#define ASC_SCSIQ_HOST_STATUS         33
#define ASC_SCSIQ_SCSI_STATUS         34
#define ASC_SCSIQ_CDB_BEG             36
#define ASC_SCSIQ_DW_REMAIN_XFER_ADDR 56
#define ASC_SCSIQ_DW_REMAIN_XFER_CNT  60
#define ASC_SCSIQ_B_FIRST_SG_WK_QP    48
#define ASC_SCSIQ_B_SG_WK_QP          49
#define ASC_SCSIQ_B_SG_WK_IX          50
#define ASC_SCSIQ_W_ALT_DC1           52
#define ASC_SCSIQ_B_LIST_CNT          6
#define ASC_SCSIQ_B_CUR_LIST_CNT      7
#define ASC_SGQ_B_SG_CNTL             4
#define ASC_SGQ_B_SG_HEAD_QP          5
#define ASC_SGQ_B_SG_LIST_CNT         6
#define ASC_SGQ_B_SG_CUR_LIST_CNT     7
#define ASC_SGQ_LIST_BEG              8
#define ASC_DEF_SCSI1_QNG    4
#define ASC_MAX_SCSI1_QNG    4
#define ASC_DEF_SCSI2_QNG    16
#define ASC_MAX_SCSI2_QNG    32
#define ASC_TAG_CODE_MASK    0x23
#define ASC_STOP_REQ_RISC_STOP      0x01
#define ASC_STOP_ACK_RISC_STOP      0x03
#define ASC_STOP_CLEAN_UP_BUSY_Q    0x10
#define ASC_STOP_CLEAN_UP_DISC_Q    0x20
#define ASC_STOP_HOST_REQ_RISC_HALT 0x40
#define ASC_TIDLUN_TO_IX(tid, lun)  (ASC_SCSI_TIX_TYPE)((tid) + ((lun)<<ASC_SCSI_ID_BITS))
#define ASC_TID_TO_TARGET_ID(tid)   (ASC_SCSI_BIT_ID_TYPE)(0x01 << (tid))
#define ASC_TIX_TO_TARGET_ID(tix)   (0x01 << ((tix) & ASC_MAX_TID))
#define ASC_TIX_TO_TID(tix)         ((tix) & ASC_MAX_TID)
#define ASC_TID_TO_TIX(tid)         ((tid) & ASC_MAX_TID)
#define ASC_TIX_TO_LUN(tix)         (((tix) >> ASC_SCSI_ID_BITS) & ASC_MAX_LUN)
#define ASC_QNO_TO_QADDR(q_no)      ((ASC_QADR_BEG)+((int)(q_no) << 6))

typedef struct asc_scsiq_1 {
	uchar status;
	uchar q_no;
	uchar cntl;
	uchar sg_queue_cnt;
	uchar target_id;
	uchar target_lun;
	ASC_PADDR data_addr;
	ASC_DCNT data_cnt;
	ASC_PADDR sense_addr;
	uchar sense_len;
	uchar extra_bytes;
} ASC_SCSIQ_1;

typedef struct asc_scsiq_2 {
	ASC_VADDR srb_ptr;
	uchar target_ix;
	uchar flag;
	uchar cdb_len;
	uchar tag_code;
	ushort vm_id;
} ASC_SCSIQ_2;

typedef struct asc_scsiq_3 {
	uchar done_stat;
	uchar host_stat;
	uchar scsi_stat;
	uchar scsi_msg;
} ASC_SCSIQ_3;

typedef struct asc_scsiq_4 {
	uchar cdb[ASC_MAX_CDB_LEN];
	uchar y_first_sg_list_qp;
	uchar y_working_sg_qp;
	uchar y_working_sg_ix;
	uchar y_res;
	ushort x_req_count;
	ushort x_reconnect_rtn;
	ASC_PADDR x_saved_data_addr;
	ASC_DCNT x_saved_data_cnt;
} ASC_SCSIQ_4;

typedef struct asc_q_done_info {
	ASC_SCSIQ_2 d2;
	ASC_SCSIQ_3 d3;
	uchar q_status;
	uchar q_no;
	uchar cntl;
	uchar sense_len;
	uchar extra_bytes;
	uchar res;
	ASC_DCNT remain_bytes;
} ASC_QDONE_INFO;

typedef struct asc_sg_list {
	ASC_PADDR addr;
	ASC_DCNT bytes;
} ASC_SG_LIST;

typedef struct asc_sg_head {
	ushort entry_cnt;
	ushort queue_cnt;
	ushort entry_to_copy;
	ushort res;
	ASC_SG_LIST sg_list[0];
} ASC_SG_HEAD;

typedef struct asc_scsi_q {
	ASC_SCSIQ_1 q1;
	ASC_SCSIQ_2 q2;
	uchar *cdbptr;
	ASC_SG_HEAD *sg_head;
	ushort remain_sg_entry_cnt;
	ushort next_sg_index;
} ASC_SCSI_Q;

typedef struct asc_scsi_req_q {
	ASC_SCSIQ_1 r1;
	ASC_SCSIQ_2 r2;
	uchar *cdbptr;
	ASC_SG_HEAD *sg_head;
	uchar *sense_ptr;
	ASC_SCSIQ_3 r3;
	uchar cdb[ASC_MAX_CDB_LEN];
	uchar sense[ASC_MIN_SENSE_LEN];
} ASC_SCSI_REQ_Q;

typedef struct asc_scsi_bios_req_q {
	ASC_SCSIQ_1 r1;
	ASC_SCSIQ_2 r2;
	uchar *cdbptr;
	ASC_SG_HEAD *sg_head;
	uchar *sense_ptr;
	ASC_SCSIQ_3 r3;
	uchar cdb[ASC_MAX_CDB_LEN];
	uchar sense[ASC_MIN_SENSE_LEN];
} ASC_SCSI_BIOS_REQ_Q;

typedef struct asc_risc_q {
	uchar fwd;
	uchar bwd;
	ASC_SCSIQ_1 i1;
	ASC_SCSIQ_2 i2;
	ASC_SCSIQ_3 i3;
	ASC_SCSIQ_4 i4;
} ASC_RISC_Q;

typedef struct asc_sg_list_q {
	uchar seq_no;
	uchar q_no;
	uchar cntl;
	uchar sg_head_qp;
	uchar sg_list_cnt;
	uchar sg_cur_list_cnt;
} ASC_SG_LIST_Q;

typedef struct asc_risc_sg_list_q {
	uchar fwd;
	uchar bwd;
	ASC_SG_LIST_Q sg;
	ASC_SG_LIST sg_list[7];
} ASC_RISC_SG_LIST_Q;

#define ASCQ_ERR_Q_STATUS             0x0D
#define ASCQ_ERR_CUR_QNG              0x17
#define ASCQ_ERR_SG_Q_LINKS           0x18
#define ASCQ_ERR_ISR_RE_ENTRY         0x1A
#define ASCQ_ERR_CRITICAL_RE_ENTRY    0x1B
#define ASCQ_ERR_ISR_ON_CRITICAL      0x1C

/*
 * Warning code values are set in ASC_DVC_VAR  'warn_code'.
 */
#define ASC_WARN_NO_ERROR             0x0000
#define ASC_WARN_IO_PORT_ROTATE       0x0001
#define ASC_WARN_EEPROM_CHKSUM        0x0002
#define ASC_WARN_IRQ_MODIFIED         0x0004
#define ASC_WARN_AUTO_CONFIG          0x0008
#define ASC_WARN_CMD_QNG_CONFLICT     0x0010
#define ASC_WARN_EEPROM_RECOVER       0x0020
#define ASC_WARN_CFG_MSW_RECOVER      0x0040

/*
 * Error code values are set in {ASC/ADV}_DVC_VAR  'err_code'.
 */
#define ASC_IERR_NO_CARRIER		0x0001	/* No more carrier memory */
#define ASC_IERR_MCODE_CHKSUM		0x0002	/* micro code check sum error */
#define ASC_IERR_SET_PC_ADDR		0x0004
#define ASC_IERR_START_STOP_CHIP	0x0008	/* start/stop chip failed */
#define ASC_IERR_ILLEGAL_CONNECTION	0x0010	/* Illegal cable connection */
#define ASC_IERR_SINGLE_END_DEVICE	0x0020	/* SE device on DIFF bus */
#define ASC_IERR_REVERSED_CABLE		0x0040	/* Narrow flat cable reversed */
#define ASC_IERR_SET_SCSI_ID		0x0080	/* set SCSI ID failed */
#define ASC_IERR_HVD_DEVICE		0x0100	/* HVD device on LVD port */
#define ASC_IERR_BAD_SIGNATURE		0x0200	/* signature not found */
#define ASC_IERR_NO_BUS_TYPE		0x0400
#define ASC_IERR_BIST_PRE_TEST		0x0800	/* BIST pre-test error */
#define ASC_IERR_BIST_RAM_TEST		0x1000	/* BIST RAM test error */
#define ASC_IERR_BAD_CHIPTYPE		0x2000	/* Invalid chip_type setting */

#define ASC_DEF_MAX_TOTAL_QNG   (0xF0)
#define ASC_MIN_TAG_Q_PER_DVC   (0x04)
#define ASC_MIN_FREE_Q        (0x02)
#define ASC_MIN_TOTAL_QNG     ((ASC_MAX_SG_QUEUE)+(ASC_MIN_FREE_Q))
#define ASC_MAX_TOTAL_QNG 240
#define ASC_MAX_PCI_ULTRA_INRAM_TOTAL_QNG 16
#define ASC_MAX_PCI_ULTRA_INRAM_TAG_QNG   8
#define ASC_MAX_PCI_INRAM_TOTAL_QNG  20
#define ASC_MAX_INRAM_TAG_QNG   16
#define ASC_IOADR_GAP   0x10
#define ASC_SYN_MAX_OFFSET         0x0F
#define ASC_DEF_SDTR_OFFSET        0x0F
#define ASC_SDTR_ULTRA_PCI_10MB_INDEX  0x02
#define ASYN_SDTR_DATA_FIX_PCI_REV_AB 0x41

/* The narrow chip only supports a limited selection of transfer rates.
 * These are encoded in the range 0..7 or 0..15 depending whether the chip
 * is Ultra-capable or not.  These tables let us convert from one to the other.
 */
static const unsigned char asc_syn_xfer_period[8] = {
	25, 30, 35, 40, 50, 60, 70, 85
};

static const unsigned char asc_syn_ultra_xfer_period[16] = {
	12, 19, 25, 32, 38, 44, 50, 57, 63, 69, 75, 82, 88, 94, 100, 107
};

typedef struct ext_msg {
	uchar msg_type;
	uchar msg_len;
	uchar msg_req;
	union {
		struct {
			uchar sdtr_xfer_period;
			uchar sdtr_req_ack_offset;
		} sdtr;
		struct {
			uchar wdtr_width;
		} wdtr;
		struct {
			uchar mdp_b3;
			uchar mdp_b2;
			uchar mdp_b1;
			uchar mdp_b0;
		} mdp;
	} u_ext_msg;
	uchar res;
} EXT_MSG;

#define xfer_period     u_ext_msg.sdtr.sdtr_xfer_period
#define req_ack_offset  u_ext_msg.sdtr.sdtr_req_ack_offset
#define wdtr_width      u_ext_msg.wdtr.wdtr_width
#define mdp_b3          u_ext_msg.mdp_b3
#define mdp_b2          u_ext_msg.mdp_b2
#define mdp_b1          u_ext_msg.mdp_b1
#define mdp_b0          u_ext_msg.mdp_b0

typedef struct asc_dvc_cfg {
	ASC_SCSI_BIT_ID_TYPE can_tagged_qng;
	ASC_SCSI_BIT_ID_TYPE cmd_qng_enabled;
	ASC_SCSI_BIT_ID_TYPE disc_enable;
	ASC_SCSI_BIT_ID_TYPE sdtr_enable;
	uchar chip_scsi_id;
	uchar isa_dma_speed;
	uchar isa_dma_channel;
	uchar chip_version;
	ushort mcode_date;
	ushort mcode_version;
	uchar max_tag_qng[ASC_MAX_TID + 1];
	uchar sdtr_period_offset[ASC_MAX_TID + 1];
	uchar adapter_info[6];
} ASC_DVC_CFG;

#define ASC_DEF_DVC_CNTL       0xFFFF
#define ASC_DEF_CHIP_SCSI_ID   7
#define ASC_DEF_ISA_DMA_SPEED  4
#define ASC_INIT_STATE_BEG_GET_CFG   0x0001
#define ASC_INIT_STATE_END_GET_CFG   0x0002
#define ASC_INIT_STATE_BEG_SET_CFG   0x0004
#define ASC_INIT_STATE_END_SET_CFG   0x0008
#define ASC_INIT_STATE_BEG_LOAD_MC   0x0010
#define ASC_INIT_STATE_END_LOAD_MC   0x0020
#define ASC_INIT_STATE_BEG_INQUIRY   0x0040
#define ASC_INIT_STATE_END_INQUIRY   0x0080
#define ASC_INIT_RESET_SCSI_DONE     0x0100
#define ASC_INIT_STATE_WITHOUT_EEP   0x8000
#define ASC_BUG_FIX_IF_NOT_DWB       0x0001
#define ASC_BUG_FIX_ASYN_USE_SYN     0x0002
#define ASC_MIN_TAGGED_CMD  7
#define ASC_MAX_SCSI_RESET_WAIT      30
#define ASC_OVERRUN_BSIZE		64

struct asc_dvc_var;		/* Forward Declaration. */

typedef struct asc_dvc_var {
	PortAddr iop_base;
	ushort err_code;
	ushort dvc_cntl;
	ushort bug_fix_cntl;
	ushort bus_type;
	ASC_SCSI_BIT_ID_TYPE init_sdtr;
	ASC_SCSI_BIT_ID_TYPE sdtr_done;
	ASC_SCSI_BIT_ID_TYPE use_tagged_qng;
	ASC_SCSI_BIT_ID_TYPE unit_not_ready;
	ASC_SCSI_BIT_ID_TYPE queue_full_or_busy;
	ASC_SCSI_BIT_ID_TYPE start_motor;
	uchar *overrun_buf;
	dma_addr_t overrun_dma;
	uchar scsi_reset_wait;
	uchar chip_no;
	char is_in_int;
	uchar max_total_qng;
	uchar cur_total_qng;
	uchar in_critical_cnt;
	uchar last_q_shortage;
	ushort init_state;
	uchar cur_dvc_qng[ASC_MAX_TID + 1];
	uchar max_dvc_qng[ASC_MAX_TID + 1];
	ASC_SCSI_Q *scsiq_busy_head[ASC_MAX_TID + 1];
	ASC_SCSI_Q *scsiq_busy_tail[ASC_MAX_TID + 1];
	const uchar *sdtr_period_tbl;
	ASC_DVC_CFG *cfg;
	ASC_SCSI_BIT_ID_TYPE pci_fix_asyn_xfer_always;
	char redo_scam;
	ushort res2;
	uchar dos_int13_table[ASC_MAX_TID + 1];
	ASC_DCNT max_dma_count;
	ASC_SCSI_BIT_ID_TYPE no_scam;
	ASC_SCSI_BIT_ID_TYPE pci_fix_asyn_xfer;
	uchar min_sdtr_index;
	uchar max_sdtr_index;
	struct asc_board *drv_ptr;
	int ptr_map_count;
	void **ptr_map;
	ASC_DCNT uc_break;
} ASC_DVC_VAR;

typedef struct asc_dvc_inq_info {
	uchar type[ASC_MAX_TID + 1][ASC_MAX_LUN + 1];
} ASC_DVC_INQ_INFO;

typedef struct asc_cap_info {
	ASC_DCNT lba;
	ASC_DCNT blk_size;
} ASC_CAP_INFO;

typedef struct asc_cap_info_array {
	ASC_CAP_INFO cap_info[ASC_MAX_TID + 1][ASC_MAX_LUN + 1];
} ASC_CAP_INFO_ARRAY;

#define ASC_MCNTL_NO_SEL_TIMEOUT  (ushort)0x0001
#define ASC_MCNTL_NULL_TARGET     (ushort)0x0002
#define ASC_CNTL_INITIATOR         (ushort)0x0001
#define ASC_CNTL_BIOS_GT_1GB       (ushort)0x0002
#define ASC_CNTL_BIOS_GT_2_DISK    (ushort)0x0004
#define ASC_CNTL_BIOS_REMOVABLE    (ushort)0x0008
#define ASC_CNTL_NO_SCAM           (ushort)0x0010
#define ASC_CNTL_INT_MULTI_Q       (ushort)0x0080
#define ASC_CNTL_NO_LUN_SUPPORT    (ushort)0x0040
#define ASC_CNTL_NO_VERIFY_COPY    (ushort)0x0100
#define ASC_CNTL_RESET_SCSI        (ushort)0x0200
#define ASC_CNTL_INIT_INQUIRY      (ushort)0x0400
#define ASC_CNTL_INIT_VERBOSE      (ushort)0x0800
#define ASC_CNTL_SCSI_PARITY       (ushort)0x1000
#define ASC_CNTL_BURST_MODE        (ushort)0x2000
#define ASC_CNTL_SDTR_ENABLE_ULTRA (ushort)0x4000
#define ASC_EEP_DVC_CFG_BEG_VL    2
#define ASC_EEP_MAX_DVC_ADDR_VL   15
#define ASC_EEP_DVC_CFG_BEG      32
#define ASC_EEP_MAX_DVC_ADDR     45
#define ASC_EEP_MAX_RETRY        20

/*
 * These macros keep the chip SCSI id and ISA DMA speed
 * bitfields in board order. C bitfields aren't portable
 * between big and little-endian platforms so they are
 * not used.
 */

#define ASC_EEP_GET_CHIP_ID(cfg)    ((cfg)->id_speed & 0x0f)
#define ASC_EEP_GET_DMA_SPD(cfg)    (((cfg)->id_speed & 0xf0) >> 4)
#define ASC_EEP_SET_CHIP_ID(cfg, sid) \
   ((cfg)->id_speed = ((cfg)->id_speed & 0xf0) | ((sid) & ASC_MAX_TID))
#define ASC_EEP_SET_DMA_SPD(cfg, spd) \
   ((cfg)->id_speed = ((cfg)->id_speed & 0x0f) | ((spd) & 0x0f) << 4)

typedef struct asceep_config {
	ushort cfg_lsw;
	ushort cfg_msw;
	uchar init_sdtr;
	uchar disc_enable;
	uchar use_cmd_qng;
	uchar start_motor;
	uchar max_total_qng;
	uchar max_tag_qng;
	uchar bios_scan;
	uchar power_up_wait;
	uchar no_scam;
	uchar id_speed;		/* low order 4 bits is chip scsi id */
	/* high order 4 bits is isa dma speed */
	uchar dos_int13_table[ASC_MAX_TID + 1];
	uchar adapter_info[6];
	ushort cntl;
	ushort chksum;
} ASCEEP_CONFIG;

#define ASC_EEP_CMD_READ          0x80
#define ASC_EEP_CMD_WRITE         0x40
#define ASC_EEP_CMD_WRITE_ABLE    0x30
#define ASC_EEP_CMD_WRITE_DISABLE 0x00
#define ASCV_MSGOUT_BEG         0x0000
#define ASCV_MSGOUT_SDTR_PERIOD (ASCV_MSGOUT_BEG+3)
#define ASCV_MSGOUT_SDTR_OFFSET (ASCV_MSGOUT_BEG+4)
#define ASCV_BREAK_SAVED_CODE   (ushort)0x0006
#define ASCV_MSGIN_BEG          (ASCV_MSGOUT_BEG+8)
#define ASCV_MSGIN_SDTR_PERIOD  (ASCV_MSGIN_BEG+3)
#define ASCV_MSGIN_SDTR_OFFSET  (ASCV_MSGIN_BEG+4)
#define ASCV_SDTR_DATA_BEG      (ASCV_MSGIN_BEG+8)
#define ASCV_SDTR_DONE_BEG      (ASCV_SDTR_DATA_BEG+8)
#define ASCV_MAX_DVC_QNG_BEG    (ushort)0x0020
#define ASCV_BREAK_ADDR           (ushort)0x0028
#define ASCV_BREAK_NOTIFY_COUNT   (ushort)0x002A
#define ASCV_BREAK_CONTROL        (ushort)0x002C
#define ASCV_BREAK_HIT_COUNT      (ushort)0x002E

#define ASCV_ASCDVC_ERR_CODE_W  (ushort)0x0030
#define ASCV_MCODE_CHKSUM_W   (ushort)0x0032
#define ASCV_MCODE_SIZE_W     (ushort)0x0034
#define ASCV_STOP_CODE_B      (ushort)0x0036
#define ASCV_DVC_ERR_CODE_B   (ushort)0x0037
#define ASCV_OVERRUN_PADDR_D  (ushort)0x0038
#define ASCV_OVERRUN_BSIZE_D  (ushort)0x003C
#define ASCV_HALTCODE_W       (ushort)0x0040
#define ASCV_CHKSUM_W         (ushort)0x0042
#define ASCV_MC_DATE_W        (ushort)0x0044
#define ASCV_MC_VER_W         (ushort)0x0046
#define ASCV_NEXTRDY_B        (ushort)0x0048
#define ASCV_DONENEXT_B       (ushort)0x0049
#define ASCV_USE_TAGGED_QNG_B (ushort)0x004A
#define ASCV_SCSIBUSY_B       (ushort)0x004B
#define ASCV_Q_DONE_IN_PROGRESS_B  (ushort)0x004C
#define ASCV_CURCDB_B         (ushort)0x004D
#define ASCV_RCLUN_B          (ushort)0x004E
#define ASCV_BUSY_QHEAD_B     (ushort)0x004F
#define ASCV_DISC1_QHEAD_B    (ushort)0x0050
#define ASCV_DISC_ENABLE_B    (ushort)0x0052
#define ASCV_CAN_TAGGED_QNG_B (ushort)0x0053
#define ASCV_HOSTSCSI_ID_B    (ushort)0x0055
#define ASCV_MCODE_CNTL_B     (ushort)0x0056
#define ASCV_NULL_TARGET_B    (ushort)0x0057
#define ASCV_FREE_Q_HEAD_W    (ushort)0x0058
#define ASCV_DONE_Q_TAIL_W    (ushort)0x005A
#define ASCV_FREE_Q_HEAD_B    (ushort)(ASCV_FREE_Q_HEAD_W+1)
#define ASCV_DONE_Q_TAIL_B    (ushort)(ASCV_DONE_Q_TAIL_W+1)
#define ASCV_HOST_FLAG_B      (ushort)0x005D
#define ASCV_TOTAL_READY_Q_B  (ushort)0x0064
#define ASCV_VER_SERIAL_B     (ushort)0x0065
#define ASCV_HALTCODE_SAVED_W (ushort)0x0066
#define ASCV_WTM_FLAG_B       (ushort)0x0068
#define ASCV_RISC_FLAG_B      (ushort)0x006A
#define ASCV_REQ_SG_LIST_QP   (ushort)0x006B
#define ASC_HOST_FLAG_IN_ISR        0x01
#define ASC_HOST_FLAG_ACK_INT       0x02
#define ASC_RISC_FLAG_GEN_INT      0x01
#define ASC_RISC_FLAG_REQ_SG_LIST  0x02
#define IOP_CTRL         (0x0F)
#define IOP_STATUS       (0x0E)
#define IOP_INT_ACK      IOP_STATUS
#define IOP_REG_IFC      (0x0D)
#define IOP_SYN_OFFSET    (0x0B)
#define IOP_EXTRA_CONTROL (0x0D)
#define IOP_REG_PC        (0x0C)
#define IOP_RAM_ADDR      (0x0A)
#define IOP_RAM_DATA      (0x08)
#define IOP_EEP_DATA      (0x06)
#define IOP_EEP_CMD       (0x07)
#define IOP_VERSION       (0x03)
#define IOP_CONFIG_HIGH   (0x04)
#define IOP_CONFIG_LOW    (0x02)
#define IOP_SIG_BYTE      (0x01)
#define IOP_SIG_WORD      (0x00)
#define IOP_REG_DC1      (0x0E)
#define IOP_REG_DC0      (0x0C)
#define IOP_REG_SB       (0x0B)
#define IOP_REG_DA1      (0x0A)
#define IOP_REG_DA0      (0x08)
#define IOP_REG_SC       (0x09)
#define IOP_DMA_SPEED    (0x07)
#define IOP_REG_FLAG     (0x07)
#define IOP_FIFO_H       (0x06)
#define IOP_FIFO_L       (0x04)
#define IOP_REG_ID       (0x05)
#define IOP_REG_QP       (0x03)
#define IOP_REG_IH       (0x02)
#define IOP_REG_IX       (0x01)
#define IOP_REG_AX       (0x00)
#define IFC_REG_LOCK      (0x00)
#define IFC_REG_UNLOCK    (0x09)
#define IFC_WR_EN_FILTER  (0x10)
#define IFC_RD_NO_EEPROM  (0x10)
#define IFC_SLEW_RATE     (0x20)
#define IFC_ACT_NEG       (0x40)
#define IFC_INP_FILTER    (0x80)
#define IFC_INIT_DEFAULT  (IFC_ACT_NEG | IFC_REG_UNLOCK)
#define SC_SEL   (uchar)(0x80)
#define SC_BSY   (uchar)(0x40)
#define SC_ACK   (uchar)(0x20)
#define SC_REQ   (uchar)(0x10)
#define SC_ATN   (uchar)(0x08)
#define SC_IO    (uchar)(0x04)
#define SC_CD    (uchar)(0x02)
#define SC_MSG   (uchar)(0x01)
#define SEC_SCSI_CTL         (uchar)(0x80)
#define SEC_ACTIVE_NEGATE    (uchar)(0x40)
#define SEC_SLEW_RATE        (uchar)(0x20)
#define SEC_ENABLE_FILTER    (uchar)(0x10)
#define ASC_HALT_EXTMSG_IN     (ushort)0x8000
#define ASC_HALT_CHK_CONDITION (ushort)0x8100
#define ASC_HALT_SS_QUEUE_FULL (ushort)0x8200
#define ASC_HALT_DISABLE_ASYN_USE_SYN_FIX  (ushort)0x8300
#define ASC_HALT_ENABLE_ASYN_USE_SYN_FIX   (ushort)0x8400
#define ASC_HALT_SDTR_REJECTED (ushort)0x4000
#define ASC_HALT_HOST_COPY_SG_LIST_TO_RISC ( ushort )0x2000
#define ASC_MAX_QNO        0xF8
#define ASC_DATA_SEC_BEG   (ushort)0x0080
#define ASC_DATA_SEC_END   (ushort)0x0080
#define ASC_CODE_SEC_BEG   (ushort)0x0080
#define ASC_CODE_SEC_END   (ushort)0x0080
#define ASC_QADR_BEG       (0x4000)
#define ASC_QADR_USED      (ushort)(ASC_MAX_QNO * 64)
#define ASC_QADR_END       (ushort)0x7FFF
#define ASC_QLAST_ADR      (ushort)0x7FC0
#define ASC_QBLK_SIZE      0x40
#define ASC_BIOS_DATA_QBEG 0xF8
#define ASC_MIN_ACTIVE_QNO 0x01
#define ASC_QLINK_END      0xFF
#define ASC_EEPROM_WORDS   0x10
#define ASC_MAX_MGS_LEN    0x10
#define ASC_BIOS_ADDR_DEF  0xDC00
#define ASC_BIOS_SIZE      0x3800
#define ASC_BIOS_RAM_OFF   0x3800
#define ASC_BIOS_RAM_SIZE  0x800
#define ASC_BIOS_MIN_ADDR  0xC000
#define ASC_BIOS_MAX_ADDR  0xEC00
#define ASC_BIOS_BANK_SIZE 0x0400
#define ASC_MCODE_START_ADDR  0x0080
#define ASC_CFG0_HOST_INT_ON    0x0020
#define ASC_CFG0_BIOS_ON        0x0040
#define ASC_CFG0_VERA_BURST_ON  0x0080
#define ASC_CFG0_SCSI_PARITY_ON 0x0800
#define ASC_CFG1_SCSI_TARGET_ON 0x0080
#define ASC_CFG1_LRAM_8BITS_ON  0x0800
#define ASC_CFG_MSW_CLR_MASK    0x3080
#define CSW_TEST1             (ASC_CS_TYPE)0x8000
#define CSW_AUTO_CONFIG       (ASC_CS_TYPE)0x4000
#define CSW_RESERVED1         (ASC_CS_TYPE)0x2000
#define CSW_IRQ_WRITTEN       (ASC_CS_TYPE)0x1000
#define CSW_33MHZ_SELECTED    (ASC_CS_TYPE)0x0800
#define CSW_TEST2             (ASC_CS_TYPE)0x0400
#define CSW_TEST3             (ASC_CS_TYPE)0x0200
#define CSW_RESERVED2         (ASC_CS_TYPE)0x0100
#define CSW_DMA_DONE          (ASC_CS_TYPE)0x0080
#define CSW_FIFO_RDY          (ASC_CS_TYPE)0x0040
#define CSW_EEP_READ_DONE     (ASC_CS_TYPE)0x0020
#define CSW_HALTED            (ASC_CS_TYPE)0x0010
#define CSW_SCSI_RESET_ACTIVE (ASC_CS_TYPE)0x0008
#define CSW_PARITY_ERR        (ASC_CS_TYPE)0x0004
#define CSW_SCSI_RESET_LATCH  (ASC_CS_TYPE)0x0002
#define CSW_INT_PENDING       (ASC_CS_TYPE)0x0001
#define CIW_CLR_SCSI_RESET_INT (ASC_CS_TYPE)0x1000
#define CIW_INT_ACK      (ASC_CS_TYPE)0x0100
#define CIW_TEST1        (ASC_CS_TYPE)0x0200
#define CIW_TEST2        (ASC_CS_TYPE)0x0400
#define CIW_SEL_33MHZ    (ASC_CS_TYPE)0x0800
#define CIW_IRQ_ACT      (ASC_CS_TYPE)0x1000
#define CC_CHIP_RESET   (uchar)0x80
#define CC_SCSI_RESET   (uchar)0x40
#define CC_HALT         (uchar)0x20
#define CC_SINGLE_STEP  (uchar)0x10
#define CC_DMA_ABLE     (uchar)0x08
#define CC_TEST         (uchar)0x04
#define CC_BANK_ONE     (uchar)0x02
#define CC_DIAG         (uchar)0x01
#define ASC_1000_ID0W      0x04C1
#define ASC_1000_ID0W_FIX  0x00C1
#define ASC_1000_ID1B      0x25
#define ASC_EISA_REV_IOP_MASK  (0x0C83)
#define ASC_EISA_CFG_IOP_MASK  (0x0C86)
#define ASC_GET_EISA_SLOT(iop)  (PortAddr)((iop) & 0xF000)
#define INS_HALTINT        (ushort)0x6281
#define INS_HALT           (ushort)0x6280
#define INS_SINT           (ushort)0x6200
#define INS_RFLAG_WTM      (ushort)0x7380
#define ASC_MC_SAVE_CODE_WSIZE  0x500
#define ASC_MC_SAVE_DATA_WSIZE  0x40

typedef struct asc_mc_saved {
	ushort data[ASC_MC_SAVE_DATA_WSIZE];
	ushort code[ASC_MC_SAVE_CODE_WSIZE];
} ASC_MC_SAVED;

#define AscGetQDoneInProgress(port)         AscReadLramByte((port), ASCV_Q_DONE_IN_PROGRESS_B)
#define AscPutQDoneInProgress(port, val)    AscWriteLramByte((port), ASCV_Q_DONE_IN_PROGRESS_B, val)
#define AscGetVarFreeQHead(port)            AscReadLramWord((port), ASCV_FREE_Q_HEAD_W)
#define AscGetVarDoneQTail(port)            AscReadLramWord((port), ASCV_DONE_Q_TAIL_W)
#define AscPutVarFreeQHead(port, val)       AscWriteLramWord((port), ASCV_FREE_Q_HEAD_W, val)
#define AscPutVarDoneQTail(port, val)       AscWriteLramWord((port), ASCV_DONE_Q_TAIL_W, val)
#define AscGetRiscVarFreeQHead(port)        AscReadLramByte((port), ASCV_NEXTRDY_B)
#define AscGetRiscVarDoneQTail(port)        AscReadLramByte((port), ASCV_DONENEXT_B)
#define AscPutRiscVarFreeQHead(port, val)   AscWriteLramByte((port), ASCV_NEXTRDY_B, val)
#define AscPutRiscVarDoneQTail(port, val)   AscWriteLramByte((port), ASCV_DONENEXT_B, val)
#define AscPutMCodeSDTRDoneAtID(port, id, data)  AscWriteLramByte((port), (ushort)((ushort)ASCV_SDTR_DONE_BEG+(ushort)id), (data))
#define AscGetMCodeSDTRDoneAtID(port, id)        AscReadLramByte((port), (ushort)((ushort)ASCV_SDTR_DONE_BEG+(ushort)id))
#define AscPutMCodeInitSDTRAtID(port, id, data)  AscWriteLramByte((port), (ushort)((ushort)ASCV_SDTR_DATA_BEG+(ushort)id), data)
#define AscGetMCodeInitSDTRAtID(port, id)        AscReadLramByte((port), (ushort)((ushort)ASCV_SDTR_DATA_BEG+(ushort)id))
#define AscGetChipSignatureByte(port)     (uchar)inp((port)+IOP_SIG_BYTE)
#define AscGetChipSignatureWord(port)     (ushort)inpw((port)+IOP_SIG_WORD)
#define AscGetChipVerNo(port)             (uchar)inp((port)+IOP_VERSION)
#define AscGetChipCfgLsw(port)            (ushort)inpw((port)+IOP_CONFIG_LOW)
#define AscGetChipCfgMsw(port)            (ushort)inpw((port)+IOP_CONFIG_HIGH)
#define AscSetChipCfgLsw(port, data)      outpw((port)+IOP_CONFIG_LOW, data)
#define AscSetChipCfgMsw(port, data)      outpw((port)+IOP_CONFIG_HIGH, data)
#define AscGetChipEEPCmd(port)            (uchar)inp((port)+IOP_EEP_CMD)
#define AscSetChipEEPCmd(port, data)      outp((port)+IOP_EEP_CMD, data)
#define AscGetChipEEPData(port)           (ushort)inpw((port)+IOP_EEP_DATA)
#define AscSetChipEEPData(port, data)     outpw((port)+IOP_EEP_DATA, data)
#define AscGetChipLramAddr(port)          (ushort)inpw((PortAddr)((port)+IOP_RAM_ADDR))
#define AscSetChipLramAddr(port, addr)    outpw((PortAddr)((port)+IOP_RAM_ADDR), addr)
#define AscGetChipLramData(port)          (ushort)inpw((port)+IOP_RAM_DATA)
#define AscSetChipLramData(port, data)    outpw((port)+IOP_RAM_DATA, data)
#define AscGetChipIFC(port)               (uchar)inp((port)+IOP_REG_IFC)
#define AscSetChipIFC(port, data)          outp((port)+IOP_REG_IFC, data)
#define AscGetChipStatus(port)            (ASC_CS_TYPE)inpw((port)+IOP_STATUS)
#define AscSetChipStatus(port, cs_val)    outpw((port)+IOP_STATUS, cs_val)
#define AscGetChipControl(port)           (uchar)inp((port)+IOP_CTRL)
#define AscSetChipControl(port, cc_val)   outp((port)+IOP_CTRL, cc_val)
#define AscGetChipSyn(port)               (uchar)inp((port)+IOP_SYN_OFFSET)
#define AscSetChipSyn(port, data)         outp((port)+IOP_SYN_OFFSET, data)
#define AscSetPCAddr(port, data)          outpw((port)+IOP_REG_PC, data)
#define AscGetPCAddr(port)                (ushort)inpw((port)+IOP_REG_PC)
#define AscIsIntPending(port)             (AscGetChipStatus(port) & (CSW_INT_PENDING | CSW_SCSI_RESET_LATCH))
#define AscGetChipScsiID(port)            ((AscGetChipCfgLsw(port) >> 8) & ASC_MAX_TID)
#define AscGetExtraControl(port)          (uchar)inp((port)+IOP_EXTRA_CONTROL)
#define AscSetExtraControl(port, data)    outp((port)+IOP_EXTRA_CONTROL, data)
#define AscReadChipAX(port)               (ushort)inpw((port)+IOP_REG_AX)
#define AscWriteChipAX(port, data)        outpw((port)+IOP_REG_AX, data)
#define AscReadChipIX(port)               (uchar)inp((port)+IOP_REG_IX)
#define AscWriteChipIX(port, data)        outp((port)+IOP_REG_IX, data)
#define AscReadChipIH(port)               (ushort)inpw((port)+IOP_REG_IH)
#define AscWriteChipIH(port, data)        outpw((port)+IOP_REG_IH, data)
#define AscReadChipQP(port)               (uchar)inp((port)+IOP_REG_QP)
#define AscWriteChipQP(port, data)        outp((port)+IOP_REG_QP, data)
#define AscReadChipFIFO_L(port)           (ushort)inpw((port)+IOP_REG_FIFO_L)
#define AscWriteChipFIFO_L(port, data)    outpw((port)+IOP_REG_FIFO_L, data)
#define AscReadChipFIFO_H(port)           (ushort)inpw((port)+IOP_REG_FIFO_H)
#define AscWriteChipFIFO_H(port, data)    outpw((port)+IOP_REG_FIFO_H, data)
#define AscReadChipDmaSpeed(port)         (uchar)inp((port)+IOP_DMA_SPEED)
#define AscWriteChipDmaSpeed(port, data)  outp((port)+IOP_DMA_SPEED, data)
#define AscReadChipDA0(port)              (ushort)inpw((port)+IOP_REG_DA0)
#define AscWriteChipDA0(port)             outpw((port)+IOP_REG_DA0, data)
#define AscReadChipDA1(port)              (ushort)inpw((port)+IOP_REG_DA1)
#define AscWriteChipDA1(port)             outpw((port)+IOP_REG_DA1, data)
#define AscReadChipDC0(port)              (ushort)inpw((port)+IOP_REG_DC0)
#define AscWriteChipDC0(port)             outpw((port)+IOP_REG_DC0, data)
#define AscReadChipDC1(port)              (ushort)inpw((port)+IOP_REG_DC1)
#define AscWriteChipDC1(port)             outpw((port)+IOP_REG_DC1, data)
#define AscReadChipDvcID(port)            (uchar)inp((port)+IOP_REG_ID)
#define AscWriteChipDvcID(port, data)     outp((port)+IOP_REG_ID, data)

/*
 * Portable Data Types
 *
 * Any instance where a 32-bit long or pointer type is assumed
 * for precision or HW defined structures, the following define
 * types must be used. In Linux the char, short, and int types
 * are all consistent at 8, 16, and 32 bits respectively. Pointers
 * and long types are 64 bits on Alpha and UltraSPARC.
 */
#define ADV_PADDR __u32		/* Physical address data type. */
#define ADV_VADDR __u32		/* Virtual address data type. */
#define ADV_DCNT  __u32		/* Unsigned Data count type. */
#define ADV_SDCNT __s32		/* Signed Data count type. */

/*
 * These macros are used to convert a virtual address to a
 * 32-bit value. This currently can be used on Linux Alpha
 * which uses 64-bit virtual address but a 32-bit bus address.
 * This is likely to break in the future, but doing this now
 * will give us time to change the HW and FW to handle 64-bit
 * addresses.
 */
#define ADV_VADDR_TO_U32   virt_to_bus
#define ADV_U32_TO_VADDR   bus_to_virt

#define AdvPortAddr  void __iomem *	/* Virtual memory address size */

/*
 * Define Adv Library required memory access macros.
 */
#define ADV_MEM_READB(addr) readb(addr)
#define ADV_MEM_READW(addr) readw(addr)
#define ADV_MEM_WRITEB(addr, byte) writeb(byte, addr)
#define ADV_MEM_WRITEW(addr, word) writew(word, addr)
#define ADV_MEM_WRITEDW(addr, dword) writel(dword, addr)

#define ADV_CARRIER_COUNT (ASC_DEF_MAX_HOST_QNG + 15)

/*
 * Define total number of simultaneous maximum element scatter-gather
 * request blocks per wide adapter. ASC_DEF_MAX_HOST_QNG (253) is the
 * maximum number of outstanding commands per wide host adapter. Each
 * command uses one or more ADV_SG_BLOCK each with 15 scatter-gather
 * elements. Allow each command to have at least one ADV_SG_BLOCK structure.
 * This allows about 15 commands to have the maximum 17 ADV_SG_BLOCK
 * structures or 255 scatter-gather elements.
 */
#define ADV_TOT_SG_BLOCK        ASC_DEF_MAX_HOST_QNG

/*
 * Define maximum number of scatter-gather elements per request.
 */
#define ADV_MAX_SG_LIST         255
#define NO_OF_SG_PER_BLOCK              15

#define ADV_EEP_DVC_CFG_BEGIN           (0x00)
#define ADV_EEP_DVC_CFG_END             (0x15)
#define ADV_EEP_DVC_CTL_BEGIN           (0x16)	/* location of OEM name */
#define ADV_EEP_MAX_WORD_ADDR           (0x1E)

#define ADV_EEP_DELAY_MS                100

#define ADV_EEPROM_BIG_ENDIAN          0x8000	/* EEPROM Bit 15 */
#define ADV_EEPROM_BIOS_ENABLE         0x4000	/* EEPROM Bit 14 */
/*
 * For the ASC3550 Bit 13 is Termination Polarity control bit.
 * For later ICs Bit 13 controls whether the CIS (Card Information
 * Service Section) is loaded from EEPROM.
 */
#define ADV_EEPROM_TERM_POL            0x2000	/* EEPROM Bit 13 */
#define ADV_EEPROM_CIS_LD              0x2000	/* EEPROM Bit 13 */
/*
 * ASC38C1600 Bit 11
 *
 * If EEPROM Bit 11 is 0 for Function 0, then Function 0 will specify
 * INT A in the PCI Configuration Space Int Pin field. If it is 1, then
 * Function 0 will specify INT B.
 *
 * If EEPROM Bit 11 is 0 for Function 1, then Function 1 will specify
 * INT B in the PCI Configuration Space Int Pin field. If it is 1, then
 * Function 1 will specify INT A.
 */
#define ADV_EEPROM_INTAB               0x0800	/* EEPROM Bit 11 */

typedef struct adveep_3550_config {
	/* Word Offset, Description */

	ushort cfg_lsw;		/* 00 power up initialization */
	/*  bit 13 set - Term Polarity Control */
	/*  bit 14 set - BIOS Enable */
	/*  bit 15 set - Big Endian Mode */
	ushort cfg_msw;		/* 01 unused      */
	ushort disc_enable;	/* 02 disconnect enable */
	ushort wdtr_able;	/* 03 Wide DTR able */
	ushort sdtr_able;	/* 04 Synchronous DTR able */
	ushort start_motor;	/* 05 send start up motor */
	ushort tagqng_able;	/* 06 tag queuing able */
	ushort bios_scan;	/* 07 BIOS device control */
	ushort scam_tolerant;	/* 08 no scam */

	uchar adapter_scsi_id;	/* 09 Host Adapter ID */
	uchar bios_boot_delay;	/*    power up wait */

	uchar scsi_reset_delay;	/* 10 reset delay */
	uchar bios_id_lun;	/*    first boot device scsi id & lun */
	/*    high nibble is lun */
	/*    low nibble is scsi id */

	uchar termination;	/* 11 0 - automatic */
	/*    1 - low off / high off */
	/*    2 - low off / high on */
	/*    3 - low on  / high on */
	/*    There is no low on  / high off */

	uchar reserved1;	/*    reserved byte (not used) */

	ushort bios_ctrl;	/* 12 BIOS control bits */
	/*  bit 0  BIOS don't act as initiator. */
	/*  bit 1  BIOS > 1 GB support */
	/*  bit 2  BIOS > 2 Disk Support */
	/*  bit 3  BIOS don't support removables */
	/*  bit 4  BIOS support bootable CD */
	/*  bit 5  BIOS scan enabled */
	/*  bit 6  BIOS support multiple LUNs */
	/*  bit 7  BIOS display of message */
	/*  bit 8  SCAM disabled */
	/*  bit 9  Reset SCSI bus during init. */
	/*  bit 10 */
	/*  bit 11 No verbose initialization. */
	/*  bit 12 SCSI parity enabled */
	/*  bit 13 */
	/*  bit 14 */
	/*  bit 15 */
	ushort ultra_able;	/* 13 ULTRA speed able */
	ushort reserved2;	/* 14 reserved */
	uchar max_host_qng;	/* 15 maximum host queuing */
	uchar max_dvc_qng;	/*    maximum per device queuing */
	ushort dvc_cntl;	/* 16 control bit for driver */
	ushort bug_fix;		/* 17 control bit for bug fix */
	ushort serial_number_word1;	/* 18 Board serial number word 1 */
	ushort serial_number_word2;	/* 19 Board serial number word 2 */
	ushort serial_number_word3;	/* 20 Board serial number word 3 */
	ushort check_sum;	/* 21 EEP check sum */
	uchar oem_name[16];	/* 22 OEM name */
	ushort dvc_err_code;	/* 30 last device driver error code */
	ushort adv_err_code;	/* 31 last uc and Adv Lib error code */
	ushort adv_err_addr;	/* 32 last uc error address */
	ushort saved_dvc_err_code;	/* 33 saved last dev. driver error code   */
	ushort saved_adv_err_code;	/* 34 saved last uc and Adv Lib error code */
	ushort saved_adv_err_addr;	/* 35 saved last uc error address         */
	ushort num_of_err;	/* 36 number of error */
} ADVEEP_3550_CONFIG;

typedef struct adveep_38C0800_config {
	/* Word Offset, Description */

	ushort cfg_lsw;		/* 00 power up initialization */
	/*  bit 13 set - Load CIS */
	/*  bit 14 set - BIOS Enable */
	/*  bit 15 set - Big Endian Mode */
	ushort cfg_msw;		/* 01 unused      */
	ushort disc_enable;	/* 02 disconnect enable */
	ushort wdtr_able;	/* 03 Wide DTR able */
	ushort sdtr_speed1;	/* 04 SDTR Speed TID 0-3 */
	ushort start_motor;	/* 05 send start up motor */
	ushort tagqng_able;	/* 06 tag queuing able */
	ushort bios_scan;	/* 07 BIOS device control */
	ushort scam_tolerant;	/* 08 no scam */

	uchar adapter_scsi_id;	/* 09 Host Adapter ID */
	uchar bios_boot_delay;	/*    power up wait */

	uchar scsi_reset_delay;	/* 10 reset delay */
	uchar bios_id_lun;	/*    first boot device scsi id & lun */
	/*    high nibble is lun */
	/*    low nibble is scsi id */

	uchar termination_se;	/* 11 0 - automatic */
	/*    1 - low off / high off */
	/*    2 - low off / high on */
	/*    3 - low on  / high on */
	/*    There is no low on  / high off */

	uchar termination_lvd;	/* 11 0 - automatic */
	/*    1 - low off / high off */
	/*    2 - low off / high on */
	/*    3 - low on  / high on */
	/*    There is no low on  / high off */

	ushort bios_ctrl;	/* 12 BIOS control bits */
	/*  bit 0  BIOS don't act as initiator. */
	/*  bit 1  BIOS > 1 GB support */
	/*  bit 2  BIOS > 2 Disk Support */
	/*  bit 3  BIOS don't support removables */
	/*  bit 4  BIOS support bootable CD */
	/*  bit 5  BIOS scan enabled */
	/*  bit 6  BIOS support multiple LUNs */
	/*  bit 7  BIOS display of message */
	/*  bit 8  SCAM disabled */
	/*  bit 9  Reset SCSI bus during init. */
	/*  bit 10 */
	/*  bit 11 No verbose initialization. */
	/*  bit 12 SCSI parity enabled */
	/*  bit 13 */
	/*  bit 14 */
	/*  bit 15 */
	ushort sdtr_speed2;	/* 13 SDTR speed TID 4-7 */
	ushort sdtr_speed3;	/* 14 SDTR speed TID 8-11 */
	uchar max_host_qng;	/* 15 maximum host queueing */
	uchar max_dvc_qng;	/*    maximum per device queuing */
	ushort dvc_cntl;	/* 16 control bit for driver */
	ushort sdtr_speed4;	/* 17 SDTR speed 4 TID 12-15 */
	ushort serial_number_word1;	/* 18 Board serial number word 1 */
	ushort serial_number_word2;	/* 19 Board serial number word 2 */
	ushort serial_number_word3;	/* 20 Board serial number word 3 */
	ushort check_sum;	/* 21 EEP check sum */
	uchar oem_name[16];	/* 22 OEM name */
	ushort dvc_err_code;	/* 30 last device driver error code */
	ushort adv_err_code;	/* 31 last uc and Adv Lib error code */
	ushort adv_err_addr;	/* 32 last uc error address */
	ushort saved_dvc_err_code;	/* 33 saved last dev. driver error code   */
	ushort saved_adv_err_code;	/* 34 saved last uc and Adv Lib error code */
	ushort saved_adv_err_addr;	/* 35 saved last uc error address         */
	ushort reserved36;	/* 36 reserved */
	ushort reserved37;	/* 37 reserved */
	ushort reserved38;	/* 38 reserved */
	ushort reserved39;	/* 39 reserved */
	ushort reserved40;	/* 40 reserved */
	ushort reserved41;	/* 41 reserved */
	ushort reserved42;	/* 42 reserved */
	ushort reserved43;	/* 43 reserved */
	ushort reserved44;	/* 44 reserved */
	ushort reserved45;	/* 45 reserved */
	ushort reserved46;	/* 46 reserved */
	ushort reserved47;	/* 47 reserved */
	ushort reserved48;	/* 48 reserved */
	ushort reserved49;	/* 49 reserved */
	ushort reserved50;	/* 50 reserved */
	ushort reserved51;	/* 51 reserved */
	ushort reserved52;	/* 52 reserved */
	ushort reserved53;	/* 53 reserved */
	ushort reserved54;	/* 54 reserved */
	ushort reserved55;	/* 55 reserved */
	ushort cisptr_lsw;	/* 56 CIS PTR LSW */
	ushort cisprt_msw;	/* 57 CIS PTR MSW */
	ushort subsysvid;	/* 58 SubSystem Vendor ID */
	ushort subsysid;	/* 59 SubSystem ID */
	ushort reserved60;	/* 60 reserved */
	ushort reserved61;	/* 61 reserved */
	ushort reserved62;	/* 62 reserved */
	ushort reserved63;	/* 63 reserved */
} ADVEEP_38C0800_CONFIG;

typedef struct adveep_38C1600_config {
	/* Word Offset, Description */

	ushort cfg_lsw;		/* 00 power up initialization */
	/*  bit 11 set - Func. 0 INTB, Func. 1 INTA */
	/*       clear - Func. 0 INTA, Func. 1 INTB */
	/*  bit 13 set - Load CIS */
	/*  bit 14 set - BIOS Enable */
	/*  bit 15 set - Big Endian Mode */
	ushort cfg_msw;		/* 01 unused */
	ushort disc_enable;	/* 02 disconnect enable */
	ushort wdtr_able;	/* 03 Wide DTR able */
	ushort sdtr_speed1;	/* 04 SDTR Speed TID 0-3 */
	ushort start_motor;	/* 05 send start up motor */
	ushort tagqng_able;	/* 06 tag queuing able */
	ushort bios_scan;	/* 07 BIOS device control */
	ushort scam_tolerant;	/* 08 no scam */

	uchar adapter_scsi_id;	/* 09 Host Adapter ID */
	uchar bios_boot_delay;	/*    power up wait */

	uchar scsi_reset_delay;	/* 10 reset delay */
	uchar bios_id_lun;	/*    first boot device scsi id & lun */
	/*    high nibble is lun */
	/*    low nibble is scsi id */

	uchar termination_se;	/* 11 0 - automatic */
	/*    1 - low off / high off */
	/*    2 - low off / high on */
	/*    3 - low on  / high on */
	/*    There is no low on  / high off */

	uchar termination_lvd;	/* 11 0 - automatic */
	/*    1 - low off / high off */
	/*    2 - low off / high on */
	/*    3 - low on  / high on */
	/*    There is no low on  / high off */

	ushort bios_ctrl;	/* 12 BIOS control bits */
	/*  bit 0  BIOS don't act as initiator. */
	/*  bit 1  BIOS > 1 GB support */
	/*  bit 2  BIOS > 2 Disk Support */
	/*  bit 3  BIOS don't support removables */
	/*  bit 4  BIOS support bootable CD */
	/*  bit 5  BIOS scan enabled */
	/*  bit 6  BIOS support multiple LUNs */
	/*  bit 7  BIOS display of message */
	/*  bit 8  SCAM disabled */
	/*  bit 9  Reset SCSI bus during init. */
	/*  bit 10 Basic Integrity Checking disabled */
	/*  bit 11 No verbose initialization. */
	/*  bit 12 SCSI parity enabled */
	/*  bit 13 AIPP (Asyn. Info. Ph. Prot.) dis. */
	/*  bit 14 */
	/*  bit 15 */
	ushort sdtr_speed2;	/* 13 SDTR speed TID 4-7 */
	ushort sdtr_speed3;	/* 14 SDTR speed TID 8-11 */
	uchar max_host_qng;	/* 15 maximum host queueing */
	uchar max_dvc_qng;	/*    maximum per device queuing */
	ushort dvc_cntl;	/* 16 control bit for driver */
	ushort sdtr_speed4;	/* 17 SDTR speed 4 TID 12-15 */
	ushort serial_number_word1;	/* 18 Board serial number word 1 */
	ushort serial_number_word2;	/* 19 Board serial number word 2 */
	ushort serial_number_word3;	/* 20 Board serial number word 3 */
	ushort check_sum;	/* 21 EEP check sum */
	uchar oem_name[16];	/* 22 OEM name */
	ushort dvc_err_code;	/* 30 last device driver error code */
	ushort adv_err_code;	/* 31 last uc and Adv Lib error code */
	ushort adv_err_addr;	/* 32 last uc error address */
	ushort saved_dvc_err_code;	/* 33 saved last dev. driver error code   */
	ushort saved_adv_err_code;	/* 34 saved last uc and Adv Lib error code */
	ushort saved_adv_err_addr;	/* 35 saved last uc error address         */
	ushort reserved36;	/* 36 reserved */
	ushort reserved37;	/* 37 reserved */
	ushort reserved38;	/* 38 reserved */
	ushort reserved39;	/* 39 reserved */
	ushort reserved40;	/* 40 reserved */
	ushort reserved41;	/* 41 reserved */
	ushort reserved42;	/* 42 reserved */
	ushort reserved43;	/* 43 reserved */
	ushort reserved44;	/* 44 reserved */
	ushort reserved45;	/* 45 reserved */
	ushort reserved46;	/* 46 reserved */
	ushort reserved47;	/* 47 reserved */
	ushort reserved48;	/* 48 reserved */
	ushort reserved49;	/* 49 reserved */
	ushort reserved50;	/* 50 reserved */
	ushort reserved51;	/* 51 reserved */
	ushort reserved52;	/* 52 reserved */
	ushort reserved53;	/* 53 reserved */
	ushort reserved54;	/* 54 reserved */
	ushort reserved55;	/* 55 reserved */
	ushort cisptr_lsw;	/* 56 CIS PTR LSW */
	ushort cisprt_msw;	/* 57 CIS PTR MSW */
	ushort subsysvid;	/* 58 SubSystem Vendor ID */
	ushort subsysid;	/* 59 SubSystem ID */
	ushort reserved60;	/* 60 reserved */
	ushort reserved61;	/* 61 reserved */
	ushort reserved62;	/* 62 reserved */
	ushort reserved63;	/* 63 reserved */
} ADVEEP_38C1600_CONFIG;

/*
 * EEPROM Commands
 */
#define ASC_EEP_CMD_DONE             0x0200

/* bios_ctrl */
#define BIOS_CTRL_BIOS               0x0001
#define BIOS_CTRL_EXTENDED_XLAT      0x0002
#define BIOS_CTRL_GT_2_DISK          0x0004
#define BIOS_CTRL_BIOS_REMOVABLE     0x0008
#define BIOS_CTRL_BOOTABLE_CD        0x0010
#define BIOS_CTRL_MULTIPLE_LUN       0x0040
#define BIOS_CTRL_DISPLAY_MSG        0x0080
#define BIOS_CTRL_NO_SCAM            0x0100
#define BIOS_CTRL_RESET_SCSI_BUS     0x0200
#define BIOS_CTRL_INIT_VERBOSE       0x0800
#define BIOS_CTRL_SCSI_PARITY        0x1000
#define BIOS_CTRL_AIPP_DIS           0x2000

#define ADV_3550_MEMSIZE   0x2000	/* 8 KB Internal Memory */

#define ADV_38C0800_MEMSIZE  0x4000	/* 16 KB Internal Memory */

/*
 * XXX - Since ASC38C1600 Rev.3 has a local RAM failure issue, there is
 * a special 16K Adv Library and Microcode version. After the issue is
 * resolved, should restore 32K support.
 *
 * #define ADV_38C1600_MEMSIZE  0x8000L   * 32 KB Internal Memory *
 */
#define ADV_38C1600_MEMSIZE  0x4000	/* 16 KB Internal Memory */

/*
 * Byte I/O register address from base of 'iop_base'.
 */
#define IOPB_INTR_STATUS_REG    0x00
#define IOPB_CHIP_ID_1          0x01
#define IOPB_INTR_ENABLES       0x02
#define IOPB_CHIP_TYPE_REV      0x03
#define IOPB_RES_ADDR_4         0x04
#define IOPB_RES_ADDR_5         0x05
#define IOPB_RAM_DATA           0x06
#define IOPB_RES_ADDR_7         0x07
#define IOPB_FLAG_REG           0x08
#define IOPB_RES_ADDR_9         0x09
#define IOPB_RISC_CSR           0x0A
#define IOPB_RES_ADDR_B         0x0B
#define IOPB_RES_ADDR_C         0x0C
#define IOPB_RES_ADDR_D         0x0D
#define IOPB_SOFT_OVER_WR       0x0E
#define IOPB_RES_ADDR_F         0x0F
#define IOPB_MEM_CFG            0x10
#define IOPB_RES_ADDR_11        0x11
#define IOPB_GPIO_DATA          0x12
#define IOPB_RES_ADDR_13        0x13
#define IOPB_FLASH_PAGE         0x14
#define IOPB_RES_ADDR_15        0x15
#define IOPB_GPIO_CNTL          0x16
#define IOPB_RES_ADDR_17        0x17
#define IOPB_FLASH_DATA         0x18
#define IOPB_RES_ADDR_19        0x19
#define IOPB_RES_ADDR_1A        0x1A
#define IOPB_RES_ADDR_1B        0x1B
#define IOPB_RES_ADDR_1C        0x1C
#define IOPB_RES_ADDR_1D        0x1D
#define IOPB_RES_ADDR_1E        0x1E
#define IOPB_RES_ADDR_1F        0x1F
#define IOPB_DMA_CFG0           0x20
#define IOPB_DMA_CFG1           0x21
#define IOPB_TICKLE             0x22
#define IOPB_DMA_REG_WR         0x23
#define IOPB_SDMA_STATUS        0x24
#define IOPB_SCSI_BYTE_CNT      0x25
#define IOPB_HOST_BYTE_CNT      0x26
#define IOPB_BYTE_LEFT_TO_XFER  0x27
#define IOPB_BYTE_TO_XFER_0     0x28
#define IOPB_BYTE_TO_XFER_1     0x29
#define IOPB_BYTE_TO_XFER_2     0x2A
#define IOPB_BYTE_TO_XFER_3     0x2B
#define IOPB_ACC_GRP            0x2C
#define IOPB_RES_ADDR_2D        0x2D
#define IOPB_DEV_ID             0x2E
#define IOPB_RES_ADDR_2F        0x2F
#define IOPB_SCSI_DATA          0x30
#define IOPB_RES_ADDR_31        0x31
#define IOPB_RES_ADDR_32        0x32
#define IOPB_SCSI_DATA_HSHK     0x33
#define IOPB_SCSI_CTRL          0x34
#define IOPB_RES_ADDR_35        0x35
#define IOPB_RES_ADDR_36        0x36
#define IOPB_RES_ADDR_37        0x37
#define IOPB_RAM_BIST           0x38
#define IOPB_PLL_TEST           0x39
#define IOPB_PCI_INT_CFG        0x3A
#define IOPB_RES_ADDR_3B        0x3B
#define IOPB_RFIFO_CNT          0x3C
#define IOPB_RES_ADDR_3D        0x3D
#define IOPB_RES_ADDR_3E        0x3E
#define IOPB_RES_ADDR_3F        0x3F

/*
 * Word I/O register address from base of 'iop_base'.
 */
#define IOPW_CHIP_ID_0          0x00	/* CID0  */
#define IOPW_CTRL_REG           0x02	/* CC    */
#define IOPW_RAM_ADDR           0x04	/* LA    */
#define IOPW_RAM_DATA           0x06	/* LD    */
#define IOPW_RES_ADDR_08        0x08
#define IOPW_RISC_CSR           0x0A	/* CSR   */
#define IOPW_SCSI_CFG0          0x0C	/* CFG0  */
#define IOPW_SCSI_CFG1          0x0E	/* CFG1  */
#define IOPW_RES_ADDR_10        0x10
#define IOPW_SEL_MASK           0x12	/* SM    */
#define IOPW_RES_ADDR_14        0x14
#define IOPW_FLASH_ADDR         0x16	/* FA    */
#define IOPW_RES_ADDR_18        0x18
#define IOPW_EE_CMD             0x1A	/* EC    */
#define IOPW_EE_DATA            0x1C	/* ED    */
#define IOPW_SFIFO_CNT          0x1E	/* SFC   */
#define IOPW_RES_ADDR_20        0x20
#define IOPW_Q_BASE             0x22	/* QB    */
#define IOPW_QP                 0x24	/* QP    */
#define IOPW_IX                 0x26	/* IX    */
#define IOPW_SP                 0x28	/* SP    */
#define IOPW_PC                 0x2A	/* PC    */
#define IOPW_RES_ADDR_2C        0x2C
#define IOPW_RES_ADDR_2E        0x2E
#define IOPW_SCSI_DATA          0x30	/* SD    */
#define IOPW_SCSI_DATA_HSHK     0x32	/* SDH   */
#define IOPW_SCSI_CTRL          0x34	/* SC    */
#define IOPW_HSHK_CFG           0x36	/* HCFG  */
#define IOPW_SXFR_STATUS        0x36	/* SXS   */
#define IOPW_SXFR_CNTL          0x38	/* SXL   */
#define IOPW_SXFR_CNTH          0x3A	/* SXH   */
#define IOPW_RES_ADDR_3C        0x3C
#define IOPW_RFIFO_DATA         0x3E	/* RFD   */

/*
 * Doubleword I/O register address from base of 'iop_base'.
 */
#define IOPDW_RES_ADDR_0         0x00
#define IOPDW_RAM_DATA           0x04
#define IOPDW_RES_ADDR_8         0x08
#define IOPDW_RES_ADDR_C         0x0C
#define IOPDW_RES_ADDR_10        0x10
#define IOPDW_COMMA              0x14
#define IOPDW_COMMB              0x18
#define IOPDW_RES_ADDR_1C        0x1C
#define IOPDW_SDMA_ADDR0         0x20
#define IOPDW_SDMA_ADDR1         0x24
#define IOPDW_SDMA_COUNT         0x28
#define IOPDW_SDMA_ERROR         0x2C
#define IOPDW_RDMA_ADDR0         0x30
#define IOPDW_RDMA_ADDR1         0x34
#define IOPDW_RDMA_COUNT         0x38
#define IOPDW_RDMA_ERROR         0x3C

#define ADV_CHIP_ID_BYTE         0x25
#define ADV_CHIP_ID_WORD         0x04C1

#define ADV_INTR_ENABLE_HOST_INTR                   0x01
#define ADV_INTR_ENABLE_SEL_INTR                    0x02
#define ADV_INTR_ENABLE_DPR_INTR                    0x04
#define ADV_INTR_ENABLE_RTA_INTR                    0x08
#define ADV_INTR_ENABLE_RMA_INTR                    0x10
#define ADV_INTR_ENABLE_RST_INTR                    0x20
#define ADV_INTR_ENABLE_DPE_INTR                    0x40
#define ADV_INTR_ENABLE_GLOBAL_INTR                 0x80

#define ADV_INTR_STATUS_INTRA            0x01
#define ADV_INTR_STATUS_INTRB            0x02
#define ADV_INTR_STATUS_INTRC            0x04

#define ADV_RISC_CSR_STOP           (0x0000)
#define ADV_RISC_TEST_COND          (0x2000)
#define ADV_RISC_CSR_RUN            (0x4000)
#define ADV_RISC_CSR_SINGLE_STEP    (0x8000)

#define ADV_CTRL_REG_HOST_INTR      0x0100
#define ADV_CTRL_REG_SEL_INTR       0x0200
#define ADV_CTRL_REG_DPR_INTR       0x0400
#define ADV_CTRL_REG_RTA_INTR       0x0800
#define ADV_CTRL_REG_RMA_INTR       0x1000
#define ADV_CTRL_REG_RES_BIT14      0x2000
#define ADV_CTRL_REG_DPE_INTR       0x4000
#define ADV_CTRL_REG_POWER_DONE     0x8000
#define ADV_CTRL_REG_ANY_INTR       0xFF00

#define ADV_CTRL_REG_CMD_RESET             0x00C6
#define ADV_CTRL_REG_CMD_WR_IO_REG         0x00C5
#define ADV_CTRL_REG_CMD_RD_IO_REG         0x00C4
#define ADV_CTRL_REG_CMD_WR_PCI_CFG_SPACE  0x00C3
#define ADV_CTRL_REG_CMD_RD_PCI_CFG_SPACE  0x00C2

#define ADV_TICKLE_NOP                      0x00
#define ADV_TICKLE_A                        0x01
#define ADV_TICKLE_B                        0x02
#define ADV_TICKLE_C                        0x03

#define AdvIsIntPending(port) \
    (AdvReadWordRegister(port, IOPW_CTRL_REG) & ADV_CTRL_REG_HOST_INTR)

/*
 * SCSI_CFG0 Register bit definitions
 */
#define TIMER_MODEAB    0xC000	/* Watchdog, Second, and Select. Timer Ctrl. */
#define PARITY_EN       0x2000	/* Enable SCSI Parity Error detection */
#define EVEN_PARITY     0x1000	/* Select Even Parity */
#define WD_LONG         0x0800	/* Watchdog Interval, 1: 57 min, 0: 13 sec */
#define QUEUE_128       0x0400	/* Queue Size, 1: 128 byte, 0: 64 byte */
#define PRIM_MODE       0x0100	/* Primitive SCSI mode */
#define SCAM_EN         0x0080	/* Enable SCAM selection */
#define SEL_TMO_LONG    0x0040	/* Sel/Resel Timeout, 1: 400 ms, 0: 1.6 ms */
#define CFRM_ID         0x0020	/* SCAM id sel. confirm., 1: fast, 0: 6.4 ms */
#define OUR_ID_EN       0x0010	/* Enable OUR_ID bits */
#define OUR_ID          0x000F	/* SCSI ID */

/*
 * SCSI_CFG1 Register bit definitions
 */
#define BIG_ENDIAN      0x8000	/* Enable Big Endian Mode MIO:15, EEP:15 */
#define TERM_POL        0x2000	/* Terminator Polarity Ctrl. MIO:13, EEP:13 */
#define SLEW_RATE       0x1000	/* SCSI output buffer slew rate */
#define FILTER_SEL      0x0C00	/* Filter Period Selection */
#define  FLTR_DISABLE    0x0000	/* Input Filtering Disabled */
#define  FLTR_11_TO_20NS 0x0800	/* Input Filtering 11ns to 20ns */
#define  FLTR_21_TO_39NS 0x0C00	/* Input Filtering 21ns to 39ns */
#define ACTIVE_DBL      0x0200	/* Disable Active Negation */
#define DIFF_MODE       0x0100	/* SCSI differential Mode (Read-Only) */
#define DIFF_SENSE      0x0080	/* 1: No SE cables, 0: SE cable (Read-Only) */
#define TERM_CTL_SEL    0x0040	/* Enable TERM_CTL_H and TERM_CTL_L */
#define TERM_CTL        0x0030	/* External SCSI Termination Bits */
#define  TERM_CTL_H      0x0020	/* Enable External SCSI Upper Termination */
#define  TERM_CTL_L      0x0010	/* Enable External SCSI Lower Termination */
#define CABLE_DETECT    0x000F	/* External SCSI Cable Connection Status */

/*
 * Addendum for ASC-38C0800 Chip
 *
 * The ASC-38C1600 Chip uses the same definitions except that the
 * bus mode override bits [12:10] have been moved to byte register
 * offset 0xE (IOPB_SOFT_OVER_WR) bits [12:10]. The [12:10] bits in
 * SCSI_CFG1 are read-only and always available. Bit 14 (DIS_TERM_DRV)
 * is not needed. The [12:10] bits in IOPB_SOFT_OVER_WR are write-only.
 * Also each ASC-38C1600 function or channel uses only cable bits [5:4]
 * and [1:0]. Bits [14], [7:6], [3:2] are unused.
 */
#define DIS_TERM_DRV    0x4000	/* 1: Read c_det[3:0], 0: cannot read */
#define HVD_LVD_SE      0x1C00	/* Device Detect Bits */
#define  HVD             0x1000	/* HVD Device Detect */
#define  LVD             0x0800	/* LVD Device Detect */
#define  SE              0x0400	/* SE Device Detect */
#define TERM_LVD        0x00C0	/* LVD Termination Bits */
#define  TERM_LVD_HI     0x0080	/* Enable LVD Upper Termination */
#define  TERM_LVD_LO     0x0040	/* Enable LVD Lower Termination */
#define TERM_SE         0x0030	/* SE Termination Bits */
#define  TERM_SE_HI      0x0020	/* Enable SE Upper Termination */
#define  TERM_SE_LO      0x0010	/* Enable SE Lower Termination */
#define C_DET_LVD       0x000C	/* LVD Cable Detect Bits */
#define  C_DET3          0x0008	/* Cable Detect for LVD External Wide */
#define  C_DET2          0x0004	/* Cable Detect for LVD Internal Wide */
#define C_DET_SE        0x0003	/* SE Cable Detect Bits */
#define  C_DET1          0x0002	/* Cable Detect for SE Internal Wide */
#define  C_DET0          0x0001	/* Cable Detect for SE Internal Narrow */

#define CABLE_ILLEGAL_A 0x7
    /* x 0 0 0  | on  on | Illegal (all 3 connectors are used) */

#define CABLE_ILLEGAL_B 0xB
    /* 0 x 0 0  | on  on | Illegal (all 3 connectors are used) */

/*
 * MEM_CFG Register bit definitions
 */
#define BIOS_EN         0x40	/* BIOS Enable MIO:14,EEP:14 */
#define FAST_EE_CLK     0x20	/* Diagnostic Bit */
#define RAM_SZ          0x1C	/* Specify size of RAM to RISC */
#define  RAM_SZ_2KB      0x00	/* 2 KB */
#define  RAM_SZ_4KB      0x04	/* 4 KB */
#define  RAM_SZ_8KB      0x08	/* 8 KB */
#define  RAM_SZ_16KB     0x0C	/* 16 KB */
#define  RAM_SZ_32KB     0x10	/* 32 KB */
#define  RAM_SZ_64KB     0x14	/* 64 KB */

/*
 * DMA_CFG0 Register bit definitions
 *
 * This register is only accessible to the host.
 */
#define BC_THRESH_ENB   0x80	/* PCI DMA Start Conditions */
#define FIFO_THRESH     0x70	/* PCI DMA FIFO Threshold */
#define  FIFO_THRESH_16B  0x00	/* 16 bytes */
#define  FIFO_THRESH_32B  0x20	/* 32 bytes */
#define  FIFO_THRESH_48B  0x30	/* 48 bytes */
#define  FIFO_THRESH_64B  0x40	/* 64 bytes */
#define  FIFO_THRESH_80B  0x50	/* 80 bytes (default) */
#define  FIFO_THRESH_96B  0x60	/* 96 bytes */
#define  FIFO_THRESH_112B 0x70	/* 112 bytes */
#define START_CTL       0x0C	/* DMA start conditions */
#define  START_CTL_TH    0x00	/* Wait threshold level (default) */
#define  START_CTL_ID    0x04	/* Wait SDMA/SBUS idle */
#define  START_CTL_THID  0x08	/* Wait threshold and SDMA/SBUS idle */
#define  START_CTL_EMFU  0x0C	/* Wait SDMA FIFO empty/full */
#define READ_CMD        0x03	/* Memory Read Method */
#define  READ_CMD_MR     0x00	/* Memory Read */
#define  READ_CMD_MRL    0x02	/* Memory Read Long */
#define  READ_CMD_MRM    0x03	/* Memory Read Multiple (default) */

/*
 * ASC-38C0800 RAM BIST Register bit definitions
 */
#define RAM_TEST_MODE         0x80
#define PRE_TEST_MODE         0x40
#define NORMAL_MODE           0x00
#define RAM_TEST_DONE         0x10
#define RAM_TEST_STATUS       0x0F
#define  RAM_TEST_HOST_ERROR   0x08
#define  RAM_TEST_INTRAM_ERROR 0x04
#define  RAM_TEST_RISC_ERROR   0x02
#define  RAM_TEST_SCSI_ERROR   0x01
#define  RAM_TEST_SUCCESS      0x00
#define PRE_TEST_VALUE        0x05
#define NORMAL_VALUE          0x00

/*
 * ASC38C1600 Definitions
 *
 * IOPB_PCI_INT_CFG Bit Field Definitions
 */

#define INTAB_LD        0x80	/* Value loaded from EEPROM Bit 11. */

/*
 * Bit 1 can be set to change the interrupt for the Function to operate in
 * Totem Pole mode. By default Bit 1 is 0 and the interrupt operates in
 * Open Drain mode. Both functions of the ASC38C1600 must be set to the same
 * mode, otherwise the operating mode is undefined.
 */
#define TOTEMPOLE       0x02

/*
 * Bit 0 can be used to change the Int Pin for the Function. The value is
 * 0 by default for both Functions with Function 0 using INT A and Function
 * B using INT B. For Function 0 if set, INT B is used. For Function 1 if set,
 * INT A is used.
 *
 * EEPROM Word 0 Bit 11 for each Function may change the initial Int Pin
 * value specified in the PCI Configuration Space.
 */
#define INTAB           0x01

/*
 * Adv Library Status Definitions
 */
#define ADV_TRUE        1
#define ADV_FALSE       0
#define ADV_SUCCESS     1
#define ADV_BUSY        0
#define ADV_ERROR       (-1)

/*
 * ADV_DVC_VAR 'warn_code' values
 */
#define ASC_WARN_BUSRESET_ERROR         0x0001	/* SCSI Bus Reset error */
#define ASC_WARN_EEPROM_CHKSUM          0x0002	/* EEP check sum error */
#define ASC_WARN_EEPROM_TERMINATION     0x0004	/* EEP termination bad field */
#define ASC_WARN_ERROR                  0xFFFF	/* ADV_ERROR return */

#define ADV_MAX_TID                     15	/* max. target identifier */
#define ADV_MAX_LUN                     7	/* max. logical unit number */

/*
 * Fixed locations of microcode operating variables.
 */
#define ASC_MC_CODE_BEGIN_ADDR          0x0028	/* microcode start address */
#define ASC_MC_CODE_END_ADDR            0x002A	/* microcode end address */
#define ASC_MC_CODE_CHK_SUM             0x002C	/* microcode code checksum */
#define ASC_MC_VERSION_DATE             0x0038	/* microcode version */
#define ASC_MC_VERSION_NUM              0x003A	/* microcode number */
#define ASC_MC_BIOSMEM                  0x0040	/* BIOS RISC Memory Start */
#define ASC_MC_BIOSLEN                  0x0050	/* BIOS RISC Memory Length */
#define ASC_MC_BIOS_SIGNATURE           0x0058	/* BIOS Signature 0x55AA */
#define ASC_MC_BIOS_VERSION             0x005A	/* BIOS Version (2 bytes) */
#define ASC_MC_SDTR_SPEED1              0x0090	/* SDTR Speed for TID 0-3 */
#define ASC_MC_SDTR_SPEED2              0x0092	/* SDTR Speed for TID 4-7 */
#define ASC_MC_SDTR_SPEED3              0x0094	/* SDTR Speed for TID 8-11 */
#define ASC_MC_SDTR_SPEED4              0x0096	/* SDTR Speed for TID 12-15 */
#define ASC_MC_CHIP_TYPE                0x009A
#define ASC_MC_INTRB_CODE               0x009B
#define ASC_MC_WDTR_ABLE                0x009C
#define ASC_MC_SDTR_ABLE                0x009E
#define ASC_MC_TAGQNG_ABLE              0x00A0
#define ASC_MC_DISC_ENABLE              0x00A2
#define ASC_MC_IDLE_CMD_STATUS          0x00A4
#define ASC_MC_IDLE_CMD                 0x00A6
#define ASC_MC_IDLE_CMD_PARAMETER       0x00A8
#define ASC_MC_DEFAULT_SCSI_CFG0        0x00AC
#define ASC_MC_DEFAULT_SCSI_CFG1        0x00AE
#define ASC_MC_DEFAULT_MEM_CFG          0x00B0
#define ASC_MC_DEFAULT_SEL_MASK         0x00B2
#define ASC_MC_SDTR_DONE                0x00B6
#define ASC_MC_NUMBER_OF_QUEUED_CMD     0x00C0
#define ASC_MC_NUMBER_OF_MAX_CMD        0x00D0
#define ASC_MC_DEVICE_HSHK_CFG_TABLE    0x0100
#define ASC_MC_CONTROL_FLAG             0x0122	/* Microcode control flag. */
#define ASC_MC_WDTR_DONE                0x0124
#define ASC_MC_CAM_MODE_MASK            0x015E	/* CAM mode TID bitmask. */
#define ASC_MC_ICQ                      0x0160
#define ASC_MC_IRQ                      0x0164
#define ASC_MC_PPR_ABLE                 0x017A

/*
 * BIOS LRAM variable absolute offsets.
 */
#define BIOS_CODESEG    0x54
#define BIOS_CODELEN    0x56
#define BIOS_SIGNATURE  0x58
#define BIOS_VERSION    0x5A

/*
 * Microcode Control Flags
 *
 * Flags set by the Adv Library in RISC variable 'control_flag' (0x122)
 * and handled by the microcode.
 */
#define CONTROL_FLAG_IGNORE_PERR        0x0001	/* Ignore DMA Parity Errors */
#define CONTROL_FLAG_ENABLE_AIPP        0x0002	/* Enabled AIPP checking. */

/*
 * ASC_MC_DEVICE_HSHK_CFG_TABLE microcode table or HSHK_CFG register format
 */
#define HSHK_CFG_WIDE_XFR       0x8000
#define HSHK_CFG_RATE           0x0F00
#define HSHK_CFG_OFFSET         0x001F

#define ASC_DEF_MAX_HOST_QNG    0xFD	/* Max. number of host commands (253) */
#define ASC_DEF_MIN_HOST_QNG    0x10	/* Min. number of host commands (16) */
#define ASC_DEF_MAX_DVC_QNG     0x3F	/* Max. number commands per device (63) */
#define ASC_DEF_MIN_DVC_QNG     0x04	/* Min. number commands per device (4) */

#define ASC_QC_DATA_CHECK  0x01	/* Require ASC_QC_DATA_OUT set or clear. */
#define ASC_QC_DATA_OUT    0x02	/* Data out DMA transfer. */
#define ASC_QC_START_MOTOR 0x04	/* Send auto-start motor before request. */
#define ASC_QC_NO_OVERRUN  0x08	/* Don't report overrun. */
#define ASC_QC_FREEZE_TIDQ 0x10	/* Freeze TID queue after request. XXX TBD */

#define ASC_QSC_NO_DISC     0x01	/* Don't allow disconnect for request. */
#define ASC_QSC_NO_TAGMSG   0x02	/* Don't allow tag queuing for request. */
#define ASC_QSC_NO_SYNC     0x04	/* Don't use Synch. transfer on request. */
#define ASC_QSC_NO_WIDE     0x08	/* Don't use Wide transfer on request. */
#define ASC_QSC_REDO_DTR    0x10	/* Renegotiate WDTR/SDTR before request. */
/*
 * Note: If a Tag Message is to be sent and neither ASC_QSC_HEAD_TAG or
 * ASC_QSC_ORDERED_TAG is set, then a Simple Tag Message (0x20) is used.
 */
#define ASC_QSC_HEAD_TAG    0x40	/* Use Head Tag Message (0x21). */
#define ASC_QSC_ORDERED_TAG 0x80	/* Use Ordered Tag Message (0x22). */

/*
 * All fields here are accessed by the board microcode and need to be
 * little-endian.
 */
typedef struct adv_carr_t {
	ADV_VADDR carr_va;	/* Carrier Virtual Address */
	ADV_PADDR carr_pa;	/* Carrier Physical Address */
	ADV_VADDR areq_vpa;	/* ASC_SCSI_REQ_Q Virtual or Physical Address */
	/*
	 * next_vpa [31:4]            Carrier Virtual or Physical Next Pointer
	 *
	 * next_vpa [3:1]             Reserved Bits
	 * next_vpa [0]               Done Flag set in Response Queue.
	 */
	ADV_VADDR next_vpa;
} ADV_CARR_T;

/*
 * Mask used to eliminate low 4 bits of carrier 'next_vpa' field.
 */
#define ASC_NEXT_VPA_MASK       0xFFFFFFF0

#define ASC_RQ_DONE             0x00000001
#define ASC_RQ_GOOD             0x00000002
#define ASC_CQ_STOPPER          0x00000000

#define ASC_GET_CARRP(carrp) ((carrp) & ASC_NEXT_VPA_MASK)

#define ADV_CARRIER_NUM_PAGE_CROSSING \
    (((ADV_CARRIER_COUNT * sizeof(ADV_CARR_T)) + (PAGE_SIZE - 1))/PAGE_SIZE)

#define ADV_CARRIER_BUFSIZE \
    ((ADV_CARRIER_COUNT + ADV_CARRIER_NUM_PAGE_CROSSING) * sizeof(ADV_CARR_T))

/*
 * ASC_SCSI_REQ_Q 'a_flag' definitions
 *
 * The Adv Library should limit use to the lower nibble (4 bits) of
 * a_flag. Drivers are free to use the upper nibble (4 bits) of a_flag.
 */
#define ADV_POLL_REQUEST                0x01	/* poll for request completion */
#define ADV_SCSIQ_DONE                  0x02	/* request done */
#define ADV_DONT_RETRY                  0x08	/* don't do retry */

#define ADV_CHIP_ASC3550          0x01	/* Ultra-Wide IC */
#define ADV_CHIP_ASC38C0800       0x02	/* Ultra2-Wide/LVD IC */
#define ADV_CHIP_ASC38C1600       0x03	/* Ultra3-Wide/LVD2 IC */

/*
 * Adapter temporary configuration structure
 *
 * This structure can be discarded after initialization. Don't add
 * fields here needed after initialization.
 *
 * Field naming convention:
 *
 *  *_enable indicates the field enables or disables a feature. The
 *  value of the field is never reset.
 */
typedef struct adv_dvc_cfg {
	ushort disc_enable;	/* enable disconnection */
	uchar chip_version;	/* chip version */
	uchar termination;	/* Term. Ctrl. bits 6-5 of SCSI_CFG1 register */
	ushort control_flag;	/* Microcode Control Flag */
	ushort mcode_date;	/* Microcode date */
	ushort mcode_version;	/* Microcode version */
	ushort serial1;		/* EEPROM serial number word 1 */
	ushort serial2;		/* EEPROM serial number word 2 */
	ushort serial3;		/* EEPROM serial number word 3 */
} ADV_DVC_CFG;

struct adv_dvc_var;
struct adv_scsi_req_q;

typedef struct asc_sg_block {
	uchar reserved1;
	uchar reserved2;
	uchar reserved3;
	uchar sg_cnt;		/* Valid entries in block. */
	ADV_PADDR sg_ptr;	/* Pointer to next sg block. */
	struct {
		ADV_PADDR sg_addr;	/* SG element address. */
		ADV_DCNT sg_count;	/* SG element count. */
	} sg_list[NO_OF_SG_PER_BLOCK];
} ADV_SG_BLOCK;

/*
 * ADV_SCSI_REQ_Q - microcode request structure
 *
 * All fields in this structure up to byte 60 are used by the microcode.
 * The microcode makes assumptions about the size and ordering of fields
 * in this structure. Do not change the structure definition here without
 * coordinating the change with the microcode.
 *
 * All fields accessed by microcode must be maintained in little_endian
 * order.
 */
typedef struct adv_scsi_req_q {
	uchar cntl;		/* Ucode flags and state (ASC_MC_QC_*). */
	uchar target_cmd;
	uchar target_id;	/* Device target identifier. */
	uchar target_lun;	/* Device target logical unit number. */
	ADV_PADDR data_addr;	/* Data buffer physical address. */
	ADV_DCNT data_cnt;	/* Data count. Ucode sets to residual. */
	ADV_PADDR sense_addr;
	ADV_PADDR carr_pa;
	uchar mflag;
	uchar sense_len;
	uchar cdb_len;		/* SCSI CDB length. Must <= 16 bytes. */
	uchar scsi_cntl;
	uchar done_status;	/* Completion status. */
	uchar scsi_status;	/* SCSI status byte. */
	uchar host_status;	/* Ucode host status. */
	uchar sg_working_ix;
	uchar cdb[12];		/* SCSI CDB bytes 0-11. */
	ADV_PADDR sg_real_addr;	/* SG list physical address. */
	ADV_PADDR scsiq_rptr;
	uchar cdb16[4];		/* SCSI CDB bytes 12-15. */
	ADV_VADDR scsiq_ptr;
	ADV_VADDR carr_va;
	/*
	 * End of microcode structure - 60 bytes. The rest of the structure
	 * is used by the Adv Library and ignored by the microcode.
	 */
	ADV_VADDR srb_ptr;
	ADV_SG_BLOCK *sg_list_ptr;	/* SG list virtual address. */
	char *vdata_addr;	/* Data buffer virtual address. */
	uchar a_flag;
	uchar pad[2];		/* Pad out to a word boundary. */
} ADV_SCSI_REQ_Q;

/*
 * The following two structures are used to process Wide Board requests.
 *
 * The ADV_SCSI_REQ_Q structure in adv_req_t is passed to the Adv Library
 * and microcode with the ADV_SCSI_REQ_Q field 'srb_ptr' pointing to the
 * adv_req_t. The adv_req_t structure 'cmndp' field in turn points to the
 * Mid-Level SCSI request structure.
 *
 * Zero or more ADV_SG_BLOCK are used with each ADV_SCSI_REQ_Q. Each
 * ADV_SG_BLOCK structure holds 15 scatter-gather elements. Under Linux
 * up to 255 scatter-gather elements may be used per request or
 * ADV_SCSI_REQ_Q.
 *
 * Both structures must be 32 byte aligned.
 */
typedef struct adv_sgblk {
	ADV_SG_BLOCK sg_block;	/* Sgblock structure. */
	uchar align[32];	/* Sgblock structure padding. */
	struct adv_sgblk *next_sgblkp;	/* Next scatter-gather structure. */
} adv_sgblk_t;

typedef struct adv_req {
	ADV_SCSI_REQ_Q scsi_req_q;	/* Adv Library request structure. */
	uchar align[32];	/* Request structure padding. */
	struct scsi_cmnd *cmndp;	/* Mid-Level SCSI command pointer. */
	adv_sgblk_t *sgblkp;	/* Adv Library scatter-gather pointer. */
	struct adv_req *next_reqp;	/* Next Request Structure. */
} adv_req_t;

/*
 * Adapter operation variable structure.
 *
 * One structure is required per host adapter.
 *
 * Field naming convention:
 *
 *  *_able indicates both whether a feature should be enabled or disabled
 *  and whether a device isi capable of the feature. At initialization
 *  this field may be set, but later if a device is found to be incapable
 *  of the feature, the field is cleared.
 */
typedef struct adv_dvc_var {
	AdvPortAddr iop_base;	/* I/O port address */
	ushort err_code;	/* fatal error code */
	ushort bios_ctrl;	/* BIOS control word, EEPROM word 12 */
	ushort wdtr_able;	/* try WDTR for a device */
	ushort sdtr_able;	/* try SDTR for a device */
	ushort ultra_able;	/* try SDTR Ultra speed for a device */
	ushort sdtr_speed1;	/* EEPROM SDTR Speed for TID 0-3   */
	ushort sdtr_speed2;	/* EEPROM SDTR Speed for TID 4-7   */
	ushort sdtr_speed3;	/* EEPROM SDTR Speed for TID 8-11  */
	ushort sdtr_speed4;	/* EEPROM SDTR Speed for TID 12-15 */
	ushort tagqng_able;	/* try tagged queuing with a device */
	ushort ppr_able;	/* PPR message capable per TID bitmask. */
	uchar max_dvc_qng;	/* maximum number of tagged commands per device */
	ushort start_motor;	/* start motor command allowed */
	uchar scsi_reset_wait;	/* delay in seconds after scsi bus reset */
	uchar chip_no;		/* should be assigned by caller */
	uchar max_host_qng;	/* maximum number of Q'ed command allowed */
	ushort no_scam;		/* scam_tolerant of EEPROM */
	struct asc_board *drv_ptr;	/* driver pointer to private structure */
	uchar chip_scsi_id;	/* chip SCSI target ID */