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#ifndef _AHA1740_H

/* $Id: aha1740.h,v 1.1 2005-12-20 10:17:45 jcastillo Exp $

 *

 * Header file for the adaptec 1740 driver for Linux

 *

 * With minor revisions 3/31/93

 * Written and (C) 1992,1993 Brad McLean.  See aha1740.c

 * for more info

 *

 */

#include <linux/types.h>

#include <linux/kdev_t.h>

/* Eisa Enhanced mode operation - slot locating and addressing */

#define MINEISA 1   /* I don't have an EISA Spec to know these ranges, so I */

#define MAXEISA 8   /* Just took my machine's specifications.  Adjust to fit.*/

                    /* I just saw an ad, and bumped this from 6 to 8 */

#define SLOTBASE(x)     ((x << 12) + 0xc80)

#define SLOTSIZE        0x5c

/* EISA configuration registers & values */

#define HID0(base)      (base + 0x0)

#define HID1(base)      (base + 0x1)

#define HID2(base)      (base + 0x2)

#define HID3(base)      (base + 0x3)

#define EBCNTRL(base)   (base + 0x4)

#define PORTADR(base)   (base + 0x40)

#define BIOSADR(base)   (base + 0x41)

#define INTDEF(base)    (base + 0x42)

#define SCSIDEF(base)   (base + 0x43)

#define BUSDEF(base)    (base + 0x44)

#define RESV0(base)     (base + 0x45)

#define RESV1(base)     (base + 0x46)

#define RESV2(base)     (base + 0x47)

#define HID_MFG "ADP"

#define HID_PRD 0

#define HID_REV 2

#define EBCNTRL_VALUE 1

#define PORTADDR_ENH 0x80

/* READ */

#define G2INTST(base)   (base + 0x56)

#define G2STAT(base)    (base + 0x57)

#define MBOXIN0(base)   (base + 0x58)

#define MBOXIN1(base)   (base + 0x59)

#define MBOXIN2(base)   (base + 0x5a)

#define MBOXIN3(base)   (base + 0x5b)

#define G2STAT2(base)   (base + 0x5c)

#define G2INTST_MASK            0xf0    /* isolate the status */

#define G2INTST_CCBGOOD         0x10    /* CCB Completed */

#define G2INTST_CCBRETRY        0x50    /* CCB Completed with a retry */

#define G2INTST_HARDFAIL        0x70    /* Adapter Hardware Failure */

#define G2INTST_CMDGOOD         0xa0    /* Immediate command success */

#define G2INTST_CCBERROR        0xc0    /* CCB Completed with error */

#define G2INTST_ASNEVENT        0xd0    /* Asynchronous Event Notification */

#define G2INTST_CMDERROR        0xe0    /* Immediate command error */

#define G2STAT_MBXOUT   4       /* Mailbox Out Empty Bit */

#define G2STAT_INTPEND  2       /* Interrupt Pending Bit */

#define G2STAT_BUSY     1       /* Busy Bit (attention pending) */

#define G2STAT2_READY   0        /* Host Ready Bit */

/* WRITE (and ReadBack) */

#define MBOXOUT0(base)  (base + 0x50)

#define MBOXOUT1(base)  (base + 0x51)

#define MBOXOUT2(base)  (base + 0x52)

#define MBOXOUT3(base)  (base + 0x53)

#define ATTN(base)      (base + 0x54)

#define G2CNTRL(base)   (base + 0x55)

#define ATTN_IMMED      0x10    /* Immediate Command */

#define ATTN_START      0x40    /* Start CCB */

#define ATTN_ABORT      0x50    /* Abort CCB */

#define G2CNTRL_HRST    0x80            /* Hard Reset */

#define G2CNTRL_IRST    0x40            /* Clear EISA Interrupt */

#define G2CNTRL_HRDY    0x20            /* Sets HOST ready */

/* This is used with scatter-gather */

struct aha1740_chain {

  u32  dataptr;         /* Location of data */

  u32  datalen;         /* Size of this part of chain */

};

/* These belong in scsi.h */

#define any2scsi(up, p)                         \

(up)[0] = (((unsigned long)(p)) >> 16)  ;        \

(up)[1] = (((unsigned long)(p)) >> 8);          \

(up)[2] = ((unsigned long)(p));

#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )

#define xany2scsi(up, p)        \

(up)[0] = ((long)(p)) >> 24;     \

(up)[1] = ((long)(p)) >> 16;    \

(up)[2] = ((long)(p)) >> 8;     \

(up)[3] = ((long)(p));

#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \

                      + (((long)(up)[2]) <<  8) +  ((long)(up)[3]) )

#define MAX_CDB 12

#define MAX_SENSE 14

#define MAX_STATUS 32

struct ecb {                    /* Enhanced Control Block 6.1 */

  u16   cmdw;                   /* Command Word */

  /* Flag Word 1 */

  u16           cne:1,          /* Control Block Chaining */

        :6,     di:1,           /* Disable Interrupt */

        :2,     ses:1,          /* Suppress Underrun error */

        :1,     sg:1,           /* Scatter/Gather */

        :1,     dsb:1,          /* Disable Status Block */

                ars:1;          /* Automatic Request Sense */

  /* Flag Word 2 */

  u16           lun:3,          /* Logical Unit */

                tag:1,          /* Tagged Queuing */

                tt:2,           /* Tag Type */

                nd:1,           /* No Disconnect */

        :1,     dat:1,          /* Data transfer - check direction */

                dir:1,          /* Direction of transfer 1 = datain */

                st:1,           /* Suppress Transfer */

                chk:1,          /* Calculate Checksum */

        :2,     rec:1,  :1;     /* Error Recovery */

  u16   nil0;                   /* nothing */

  u32   dataptr;                /* Data or Scatter List ptr */

  u32   datalen;                /* Data or Scatter List len */

  u32   statusptr;              /* Status Block ptr */

  u32   linkptr;                /* Chain Address */

  u32   nil1;                   /* nothing */

  u32   senseptr;               /* Sense Info Pointer */

  u8    senselen;               /* Sense Length */

  u8    cdblen;                 /* CDB Length */

  u16   datacheck;              /* Data checksum */

  u8    cdb[MAX_CDB];           /* CDB area */

/* Hardware defined portion ends here, rest is driver defined */

  u8    sense[MAX_SENSE];       /* Sense area */

  u8    status[MAX_STATUS];     /* Status area */

  Scsi_Cmnd *SCpnt;             /* Link to the SCSI Command Block */

  void (*done)(Scsi_Cmnd *);    /* Completion Function */

};

#define AHA1740CMD_NOP   0x00   /* No OP */

#define AHA1740CMD_INIT  0x01   /* Initiator SCSI Command */

#define AHA1740CMD_DIAG  0x05   /* Run Diagnostic Command */

#define AHA1740CMD_SCSI  0x06   /* Initialize SCSI */

#define AHA1740CMD_SENSE 0x08   /* Read Sense Information */

#define AHA1740CMD_DOWN  0x09   /* Download Firmware (yeah, I bet!) */

#define AHA1740CMD_RINQ  0x0a   /* Read Host Adapter Inquiry Data */

#define AHA1740CMD_TARG  0x10   /* Target SCSI Command */

int aha1740_detect(Scsi_Host_Template *);

int aha1740_command(Scsi_Cmnd *);

int aha1740_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));

int aha1740_abort(Scsi_Cmnd *);

int aha1740_reset(Scsi_Cmnd *, unsigned int);

int aha1740_biosparam(Disk *, kdev_t, int*);

int aha1740_proc_info(char *buffer, char **start, off_t offset,

                               int length, int hostno, int inout);

#define AHA1740_ECBS 32

#define AHA1740_SCATTER 16

#define AHA1740_CMDLUN 1

#ifndef NULL

        #define NULL 0

#endif

extern struct proc_dir_entry proc_scsi_aha1740;

#define AHA1740 {NULL,  NULL,                           \

                   &proc_scsi_aha1740,                  \

                   aha1740_proc_info,                   \

                   "Adaptec 174x (EISA)",               \

                   aha1740_detect,                      \

                   NULL,                                \

                   NULL,                                \

                   aha1740_command,                     \

                   aha1740_queuecommand,                \

                   aha1740_abort,                       \

                   aha1740_reset,                       \

                   NULL,                                \

                   aha1740_biosparam,                   \

                   AHA1740_ECBS,                        \

                   7,                                   \

                   AHA1740_SCATTER,                     \

                   AHA1740_CMDLUN,                      \

                   0,                                    \

                   0,                                    \

                   ENABLE_CLUSTERING}

#endif