aha1542.h

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#ifndef _AHA1542_H

/* $Id: aha1542.h,v 1.1 1992/07/24 06:27:38 root Exp root $
 *
 * Header file for the adaptec 1542 driver for Linux
 *
 * $Log: aha1542.h,v $
 * Revision 1.1  1992/07/24  06:27:38  root
 * Initial revision
 *
 * Revision 1.2  1992/07/04  18:41:49  root
 * Replaced distribution with current drivers
 *
 * Revision 1.3  1992/06/23  23:58:20  root
 * Fixes.
 *
 * Revision 1.2  1992/05/26  22:13:23  root
 * Changed bug that prevented DMA above first 2 mbytes.
 *
 * Revision 1.1  1992/05/22  21:00:29  root
 * Initial revision
 *
 * Revision 1.1  1992/04/24  18:01:50  root
 * Initial revision
 *
 * Revision 1.1  1992/04/02  03:23:13  drew
 * Initial revision
 *
 * Revision 1.3  1992/01/27  14:46:29  tthorn
 * *** empty log message ***
 *
 */

#include <linux/types.h>

/* I/O Port interface 4.2 */
/* READ */
#define STATUS(base) base
#define STST    0x80        /* Self Test in Progress */
#define DIAGF   0x40        /* Internal Diagnostic Failure */
#define INIT    0x20        /* Mailbox Initialization Required */
#define IDLE    0x10        /* SCSI Host Adapter Idle */
#define CDF 0x08        /* Command/Data Out Port Full */
#define DF  0x04        /* Data In Port Full */
#define INVDCMD 0x01        /* Invalid H A Command */
#define STATMASK 0xfd       /* 0x02 is reserved */

#define INTRFLAGS(base) (STATUS(base)+2)
#define ANYINTR 0x80        /* Any Interrupt */
#define SCRD    0x08        /* SCSI Reset Detected */
#define HACC    0x04        /* HA Command Complete */
#define MBOA    0x02        /* MBO Empty */
#define MBIF    0x01        /* MBI Full */
#define INTRMASK 0x8f

/* WRITE */
#define CONTROL(base) STATUS(base)
#define HRST    0x80        /* Hard Reset */
#define SRST    0x40        /* Soft Reset */
#define IRST    0x20        /* Interrupt Reset */
#define SCRST   0x10        /* SCSI Bus Reset */

/* READ/WRITE */
#define DATA(base) (STATUS(base)+1)
#define CMD_NOP     0x00    /* No Operation */
#define CMD_MBINIT  0x01    /* Mailbox Initialization */
#define CMD_START_SCSI  0x02    /* Start SCSI Command */
#define CMD_INQUIRY 0x04    /* Adapter Inquiry */
#define CMD_EMBOI   0x05    /* Enable MailBox Out Interrupt */
#define CMD_BUSON_TIME  0x07    /* Set Bus-On Time */
#define CMD_BUSOFF_TIME 0x08    /* Set Bus-Off Time */
#define CMD_DMASPEED    0x09    /* Set AT Bus Transfer Speed */
#define CMD_RETDEVS 0x0a    /* Return Installed Devices */
#define CMD_RETCONF 0x0b    /* Return Configuration Data */
#define CMD_RETSETUP    0x0d    /* Return Setup Data */
#define CMD_ECHO    0x1f    /* ECHO Command Data */

#define CMD_EXTBIOS     0x28    /* Return extend bios information only 1542C */
#define CMD_MBENABLE    0x29    /* Set Mailbox Interface enable only 1542C */

/* Mailbox Definition 5.2.1 and 5.2.2 */
struct mailbox {
  unchar status;        /* Command/Status */
  unchar ccbptr[3];     /* msb, .., lsb */
};

/* This is used with scatter-gather */
struct chain {
  unchar datalen[3];        /* Size of this part of chain */
  unchar dataptr[3];        /* Location of data */
};

/* These belong in scsi.h also */
static inline void any2scsi(u8 *p, u32 v)
{
    p[0] = v >> 16;
    p[1] = v >> 8;
    p[2] = v;
}

#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

struct ccb {            /* Command Control Block 5.3 */
  unchar op;            /* Command Control Block Operation Code */
  unchar idlun;         /* op=0,2:Target Id, op=1:Initiator Id */
                /* Outbound data transfer, length is checked*/
                /* Inbound data transfer, length is checked */
                /* Logical Unit Number */
  unchar cdblen;        /* SCSI Command Length */
  unchar rsalen;        /* Request Sense Allocation Length/Disable */
  unchar datalen[3];        /* Data Length (msb, .., lsb) */
  unchar dataptr[3];        /* Data Pointer */
  unchar linkptr[3];        /* Link Pointer */
  unchar commlinkid;        /* Command Linking Identifier */
  unchar hastat;        /* Host Adapter Status (HASTAT) */
  unchar tarstat;       /* Target Device Status */
  unchar reserved[2];
  unchar cdb[MAX_CDB+MAX_SENSE];/* SCSI Command Descriptor Block */
                /* REQUEST SENSE */
};

static int aha1542_detect(struct scsi_host_template *);
static int aha1542_queuecommand(struct Scsi_Host *, struct scsi_cmnd *);
static int aha1542_bus_reset(Scsi_Cmnd * SCpnt);
static int aha1542_dev_reset(Scsi_Cmnd * SCpnt);
static int aha1542_host_reset(Scsi_Cmnd * SCpnt);
#if 0
static int aha1542_old_abort(Scsi_Cmnd * SCpnt);
static int aha1542_old_reset(Scsi_Cmnd *, unsigned int);
#endif
static int aha1542_biosparam(struct scsi_device *, struct block_device *,
        sector_t, int *);

#define AHA1542_MAILBOXES 8
#define AHA1542_SCATTER 16
#define AHA1542_CMDLUN 1

#endif