usr/src/sys/news3400/hbdev/scsic.h

/*
 * Copyright (c) 1992 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Sony Corp. and Kazumasa Utashiro of Software Research Associates, Inc.
 *
 * %sccs.include.redist.c%
 *
 * from: $Hdr: scsic.h,v 4.300 91/06/09 06:22:24 root Rel41 $ SONY
 *
 *      @(#)scsic.h     7.1 (Berkeley) %G%
 */

/*
 * Copyright (c) 1987- by SONY Corporation.
 */

/*
 *      scsic.h ver 1.1
 *
 *              Header file for scsi.c.
 */

#define SCSI_NOTWAIT    0x2             /* don't wait cmd completion */

#define splhi           spl7            /* IPL 7  Be careful to use this.*/

/*
 * Delay units are in microseconds.
 *
 *      1ms = 1000  on news800
 *      so 1ms = 1500 on 25MHz
 */
#define HDELAY(n)                               \
        {                                       \
                register int N = (n)*1500 ;     \
                while(--N > 0);                 \
        }

struct scsi_stat {
        int     wbc;    /* # of channel that is waiting for scsi bus free */
        int     wrc;    /* # of channel that is waiting for reselection */
        struct sc_chan_stat *ip;
                        /* In progress channel. Same as ISTAT.IP */
        int     ipc;            /* number of in progress channel. */
        int     dma_stat;       /* OFF = DMAC is not used */
#define SC_DMAC_RD      1
#define SC_DMAC_WR      2
};

#undef VOLATILE
#ifdef mips
#define VOLATILE volatile
#else
#define VOLATILE
#endif

struct sc_chan_stat {
        struct scsi     *sc ;           /* scsi struct address */
        u_char          comflg;         /* flag for save comand pointer */
        u_int           stcnt;          /* save transfer count */
        u_char          *spoint;        /* save transfer point */
        u_int           stag;           /* save tag register */
        u_int           soffset;        /* save offset register */
        u_char          intr_flg;       /* interrupt flag. SCSI_INTEN/INTDIS */
        int             chan_num;       /* channel NO. */
        VOLATILE struct sc_chan_stat *wb_next;  /* wait bus channel queue */
};

#undef VOLATILE

extern struct scintsw scintsw[];

extern struct scsi_stat scsi_stat;