/*      $NetBSD: scsivar.h,v 1.2 2023/02/12 08:25:09 tsutsui Exp $      */
/*
* Copyright (c) 1994 Rolf Grossmann
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by Rolf Grossmann.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

struct  scsi_softc {
   char sc_state;      /* controller state */
   short sc_result;    /* result of scsi command */
   /* saved interrupt state */
   u_char sc_status;     /* last 5390 status */
   u_char sc_seqstep;    /* last 5390 seqstep */
   u_char sc_intrstatus; /* last 5390 intrstatus */
   u_char sc_dmastatus;  /* mass-storage chip status */

   char *dma_addr;
   int dma_len;
};

/* scsi states */
#define SCSI_IDLE       0
#define SCSI_SELECTING  1
#define SCSI_HASBUS     2
#define SCSI_DMA        3
#define SCSI_CLEANUP    4
#define SCSI_DONE       5


/* scsi phase bits */
#define IOI     1
#define CDI     2
#define MSGI    4

/* information transfer phases */
#define DATA_OUT_PHASE  (0)
#define DATA_IN_PHASE   (IOI)
#define COMMAND_PHASE   (CDI)
#define STATUS_PHASE    (CDI|IOI)
#define MSG_OUT_PHASE   (MSGI|CDI)
#define MSG_IN_PHASE    (MSGI|CDI|IOI)

/* simple loop timeout */
#define SCSI_TIMEOUT 2000000

extern  struct scsi_softc scsi_softc;

void scsi_init(void);
int scsiicmd(char, char, u_char *, int, char *, int *);