linux/drivers/scsi/aha1542.h
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   1#ifndef _AHA1542_H
   2
   3/* $Id: aha1542.h,v 1.1 1992/07/24 06:27:38 root Exp root $
   4 *
   5 * Header file for the adaptec 1542 driver for Linux
   6 *
   7 * $Log: aha1542.h,v $
   8 * Revision 1.1  1992/07/24  06:27:38  root
   9 * Initial revision
  10 *
  11 * Revision 1.2  1992/07/04  18:41:49  root
  12 * Replaced distribution with current drivers
  13 *
  14 * Revision 1.3  1992/06/23  23:58:20  root
  15 * Fixes.
  16 *
  17 * Revision 1.2  1992/05/26  22:13:23  root
  18 * Changed bug that prevented DMA above first 2 mbytes.
  19 *
  20 * Revision 1.1  1992/05/22  21:00:29  root
  21 * Initial revision
  22 *
  23 * Revision 1.1  1992/04/24  18:01:50  root
  24 * Initial revision
  25 *
  26 * Revision 1.1  1992/04/02  03:23:13  drew
  27 * Initial revision
  28 *
  29 * Revision 1.3  1992/01/27  14:46:29  tthorn
  30 * *** empty log message ***
  31 *
  32 */
  33
  34#include <linux/types.h>
  35
  36/* I/O Port interface 4.2 */
  37/* READ */
  38#define STATUS(base) base
  39#define STST    0x80            /* Self Test in Progress */
  40#define DIAGF   0x40            /* Internal Diagnostic Failure */
  41#define INIT    0x20            /* Mailbox Initialization Required */
  42#define IDLE    0x10            /* SCSI Host Adapter Idle */
  43#define CDF     0x08            /* Command/Data Out Port Full */
  44#define DF      0x04            /* Data In Port Full */
  45#define INVDCMD 0x01            /* Invalid H A Command */
  46#define STATMASK 0xfd           /* 0x02 is reserved */
  47
  48#define INTRFLAGS(base) (STATUS(base)+2)
  49#define ANYINTR 0x80            /* Any Interrupt */
  50#define SCRD    0x08            /* SCSI Reset Detected */
  51#define HACC    0x04            /* HA Command Complete */
  52#define MBOA    0x02            /* MBO Empty */
  53#define MBIF    0x01            /* MBI Full */
  54#define INTRMASK 0x8f
  55
  56/* WRITE */
  57#define CONTROL(base) STATUS(base)
  58#define HRST    0x80            /* Hard Reset */
  59#define SRST    0x40            /* Soft Reset */
  60#define IRST    0x20            /* Interrupt Reset */
  61#define SCRST   0x10            /* SCSI Bus Reset */
  62
  63/* READ/WRITE */
  64#define DATA(base) (STATUS(base)+1)
  65#define CMD_NOP         0x00    /* No Operation */
  66#define CMD_MBINIT      0x01    /* Mailbox Initialization */
  67#define CMD_START_SCSI  0x02    /* Start SCSI Command */
  68#define CMD_INQUIRY     0x04    /* Adapter Inquiry */
  69#define CMD_EMBOI       0x05    /* Enable MailBox Out Interrupt */
  70#define CMD_BUSON_TIME  0x07    /* Set Bus-On Time */
  71#define CMD_BUSOFF_TIME 0x08    /* Set Bus-Off Time */
  72#define CMD_DMASPEED    0x09    /* Set AT Bus Transfer Speed */
  73#define CMD_RETDEVS     0x0a    /* Return Installed Devices */
  74#define CMD_RETCONF     0x0b    /* Return Configuration Data */
  75#define CMD_RETSETUP    0x0d    /* Return Setup Data */
  76#define CMD_ECHO        0x1f    /* ECHO Command Data */
  77
  78#define CMD_EXTBIOS     0x28    /* Return extend bios information only 1542C */
  79#define CMD_MBENABLE    0x29    /* Set Mailbox Interface enable only 1542C */
  80
  81/* Mailbox Definition 5.2.1 and 5.2.2 */
  82struct mailbox {
  83  unchar status;                /* Command/Status */
  84  unchar ccbptr[3];             /* msb, .., lsb */
  85};
  86
  87/* This is used with scatter-gather */
  88struct chain {
  89  unchar datalen[3];            /* Size of this part of chain */
  90  unchar dataptr[3];            /* Location of data */
  91};
  92
  93/* These belong in scsi.h also */
  94static inline void any2scsi(u8 *p, u32 v)
  95{
  96        p[0] = v >> 16;
  97        p[1] = v >> 8;
  98        p[2] = v;
  99}
 100
 101#define scsi2int(up) ( (((long)*(up)) << 16) + (((long)(up)[1]) << 8) + ((long)(up)[2]) )
 102
 103#define xany2scsi(up, p)        \
 104(up)[0] = ((long)(p)) >> 24;    \
 105(up)[1] = ((long)(p)) >> 16;    \
 106(up)[2] = ((long)(p)) >> 8;     \
 107(up)[3] = ((long)(p));
 108
 109#define xscsi2int(up) ( (((long)(up)[0]) << 24) + (((long)(up)[1]) << 16) \
 110                      + (((long)(up)[2]) <<  8) +  ((long)(up)[3]) )
 111
 112#define MAX_CDB 12
 113#define MAX_SENSE 14
 114
 115struct ccb {                    /* Command Control Block 5.3 */
 116  unchar op;                    /* Command Control Block Operation Code */
 117  unchar idlun;                 /* op=0,2:Target Id, op=1:Initiator Id */
 118                                /* Outbound data transfer, length is checked*/
 119                                /* Inbound data transfer, length is checked */
 120                                /* Logical Unit Number */
 121  unchar cdblen;                /* SCSI Command Length */
 122  unchar rsalen;                /* Request Sense Allocation Length/Disable */
 123  unchar datalen[3];            /* Data Length (msb, .., lsb) */
 124  unchar dataptr[3];            /* Data Pointer */
 125  unchar linkptr[3];            /* Link Pointer */
 126  unchar commlinkid;            /* Command Linking Identifier */
 127  unchar hastat;                /* Host Adapter Status (HASTAT) */
 128  unchar tarstat;               /* Target Device Status */
 129  unchar reserved[2];
 130  unchar cdb[MAX_CDB+MAX_SENSE];/* SCSI Command Descriptor Block */
 131                                /* REQUEST SENSE */
 132};
 133
 134static int aha1542_detect(struct scsi_host_template *);
 135static int aha1542_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
 136static int aha1542_bus_reset(Scsi_Cmnd * SCpnt);
 137static int aha1542_dev_reset(Scsi_Cmnd * SCpnt);
 138static int aha1542_host_reset(Scsi_Cmnd * SCpnt);
 139#if 0
 140static int aha1542_old_abort(Scsi_Cmnd * SCpnt);
 141static int aha1542_old_reset(Scsi_Cmnd *, unsigned int);
 142#endif
 143static int aha1542_biosparam(struct scsi_device *, struct block_device *,
 144                sector_t, int *);
 145
 146#define AHA1542_MAILBOXES 8
 147#define AHA1542_SCATTER 16
 148#define AHA1542_CMDLUN 1
 149
 150#endif
 151
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