linux/drivers/scsi/aha1740.h
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   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _AHA1740_H
   3
   4/* $Id$
   5 *
   6 * Header file for the adaptec 1740 driver for Linux
   7 *
   8 * With minor revisions 3/31/93
   9 * Written and (C) 1992,1993 Brad McLean.  See aha1740.c
  10 * for more info
  11 *
  12 */
  13
  14#include <linux/types.h>
  15
  16#define SLOTSIZE        0x5c
  17
  18/* EISA configuration registers & values */
  19#define HID0(base)      (base + 0x0)
  20#define HID1(base)      (base + 0x1)
  21#define HID2(base)      (base + 0x2)
  22#define HID3(base)      (base + 0x3)
  23#define EBCNTRL(base)   (base + 0x4)
  24#define PORTADR(base)   (base + 0x40)
  25#define BIOSADR(base)   (base + 0x41)
  26#define INTDEF(base)    (base + 0x42)
  27#define SCSIDEF(base)   (base + 0x43)
  28#define BUSDEF(base)    (base + 0x44)
  29#define RESV0(base)     (base + 0x45)
  30#define RESV1(base)     (base + 0x46)
  31#define RESV2(base)     (base + 0x47)
  32
  33#define HID_MFG "ADP"
  34#define HID_PRD 0
  35#define HID_REV 2
  36#define EBCNTRL_VALUE 1
  37#define PORTADDR_ENH 0x80
  38/* READ */
  39#define G2INTST(base)   (base + 0x56)
  40#define G2STAT(base)    (base + 0x57)
  41#define MBOXIN0(base)   (base + 0x58)
  42#define MBOXIN1(base)   (base + 0x59)
  43#define MBOXIN2(base)   (base + 0x5a)
  44#define MBOXIN3(base)   (base + 0x5b)
  45#define G2STAT2(base)   (base + 0x5c)
  46
  47#define G2INTST_MASK            0xf0    /* isolate the status */
  48#define G2INTST_CCBGOOD         0x10    /* CCB Completed */
  49#define G2INTST_CCBRETRY        0x50    /* CCB Completed with a retry */
  50#define G2INTST_HARDFAIL        0x70    /* Adapter Hardware Failure */
  51#define G2INTST_CMDGOOD         0xa0    /* Immediate command success */
  52#define G2INTST_CCBERROR        0xc0    /* CCB Completed with error */
  53#define G2INTST_ASNEVENT        0xd0    /* Asynchronous Event Notification */
  54#define G2INTST_CMDERROR        0xe0    /* Immediate command error */
  55
  56#define G2STAT_MBXOUT   4       /* Mailbox Out Empty Bit */
  57#define G2STAT_INTPEND  2       /* Interrupt Pending Bit */
  58#define G2STAT_BUSY     1       /* Busy Bit (attention pending) */
  59
  60#define G2STAT2_READY   0       /* Host Ready Bit */
  61
  62/* WRITE (and ReadBack) */
  63#define MBOXOUT0(base)  (base + 0x50)
  64#define MBOXOUT1(base)  (base + 0x51)
  65#define MBOXOUT2(base)  (base + 0x52)
  66#define MBOXOUT3(base)  (base + 0x53)
  67#define ATTN(base)      (base + 0x54)
  68#define G2CNTRL(base)   (base + 0x55)
  69
  70#define ATTN_IMMED      0x10    /* Immediate Command */
  71#define ATTN_START      0x40    /* Start CCB */
  72#define ATTN_ABORT      0x50    /* Abort CCB */
  73
  74#define G2CNTRL_HRST    0x80    /* Hard Reset */
  75#define G2CNTRL_IRST    0x40    /* Clear EISA Interrupt */
  76#define G2CNTRL_HRDY    0x20    /* Sets HOST ready */
  77
  78/* This is used with scatter-gather */
  79struct aha1740_chain {
  80        u32 dataptr;            /* Location of data */
  81        u32 datalen;            /* Size of this part of chain */
  82};
  83
  84/* These belong in scsi.h */
  85#define any2scsi(up, p)                         \
  86(up)[0] = (((unsigned long)(p)) >> 16)  ;       \
  87(up)[1] = (((unsigned long)(p)) >> 8);          \
  88(up)[2] = ((unsigned long)(p));
  89
  90#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )
  91
  92#define xany2scsi(up, p)        \
  93(up)[0] = ((long)(p)) >> 24;    \
  94(up)[1] = ((long)(p)) >> 16;    \
  95(up)[2] = ((long)(p)) >> 8;     \
  96(up)[3] = ((long)(p));
  97
  98#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
  99                      + (((long)(up)[2]) <<  8) +  ((long)(up)[3]) )
 100
 101#define MAX_CDB 12
 102#define MAX_SENSE 14
 103#define MAX_STATUS 32
 104
 105struct ecb {                    /* Enhanced Control Block 6.1 */
 106        u16 cmdw;               /* Command Word */
 107        /* Flag Word 1 */
 108        u16 cne:1,              /* Control Block Chaining */
 109        :6, di:1,               /* Disable Interrupt */
 110        :2, ses:1,              /* Suppress Underrun error */
 111        :1, sg:1,               /* Scatter/Gather */
 112        :1, dsb:1,              /* Disable Status Block */
 113         ars:1;                 /* Automatic Request Sense */
 114        /* Flag Word 2 */
 115        u16 lun:3,              /* Logical Unit */
 116         tag:1,                 /* Tagged Queuing */
 117         tt:2,                  /* Tag Type */
 118         nd:1,                  /* No Disconnect */
 119        :1, dat:1,              /* Data transfer - check direction */
 120         dir:1,                 /* Direction of transfer 1 = datain */
 121         st:1,                  /* Suppress Transfer */
 122         chk:1,                 /* Calculate Checksum */
 123        :2, rec:1,:1;           /* Error Recovery */
 124        u16 nil0;               /* nothing */
 125        u32 dataptr;            /* Data or Scatter List ptr */
 126        u32 datalen;            /* Data or Scatter List len */
 127        u32 statusptr;          /* Status Block ptr */
 128        u32 linkptr;            /* Chain Address */
 129        u32 nil1;               /* nothing */
 130        u32 senseptr;           /* Sense Info Pointer */
 131        u8 senselen;            /* Sense Length */
 132        u8 cdblen;              /* CDB Length */
 133        u16 datacheck;          /* Data checksum */
 134        u8 cdb[MAX_CDB];        /* CDB area */
 135/* Hardware defined portion ends here, rest is driver defined */
 136        u8 sense[MAX_SENSE];    /* Sense area */
 137        u8 status[MAX_STATUS];  /* Status area */
 138        struct scsi_cmnd *SCpnt;        /* Link to the SCSI Command Block */
 139        void (*done) (struct scsi_cmnd *);      /* Completion Function */
 140};
 141
 142#define AHA1740CMD_NOP   0x00   /* No OP */
 143#define AHA1740CMD_INIT  0x01   /* Initiator SCSI Command */
 144#define AHA1740CMD_DIAG  0x05   /* Run Diagnostic Command */
 145#define AHA1740CMD_SCSI  0x06   /* Initialize SCSI */
 146#define AHA1740CMD_SENSE 0x08   /* Read Sense Information */
 147#define AHA1740CMD_DOWN  0x09   /* Download Firmware (yeah, I bet!) */
 148#define AHA1740CMD_RINQ  0x0a   /* Read Host Adapter Inquiry Data */
 149#define AHA1740CMD_TARG  0x10   /* Target SCSI Command */
 150
 151#define AHA1740_ECBS 32
 152#define AHA1740_SCATTER 16
 153
 154#endif
 155
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