/*************************************************************************\
* Copyright (c) 2009 UChicago Argonne LLC, as Operator of Argonne
*     National Laboratory.
* Copyright (c) 2002 The Regents of the University of California, as
*     Operator of Los Alamos National Laboratory.
* SPDX-License-Identifier: EPICS
* EPICS BASE is distributed subject to a Software License Agreement found
* in file LICENSE that is included with this distribution.
\*************************************************************************/
/** @file drvSup.h
 *
 * @brief Driver support routines.
 */

/*
 *      Author:          Marty Kraimer
 *      Date:            6-1-90
 */

#ifndef INCdrvSuph
#define INCdrvSuph 1

#include "errMdef.h"

/** Driver entry table */
typedef struct typed_drvet {
    /** Number of function pointers which follow.  Must be >=2 */
    long number;
    /** Called from dbior() */
    long (*report)(int lvl);
    /** Called during iocInit() */
    long (*init)(void);
    /* Any further functions are driver-specific */
} typed_drvet;

#ifdef USE_TYPED_DRVET

typedef typed_drvet drvet;

#else

/* These interfaces may eventually get deprecated */

typedef long (*DRVSUPFUN) ();   /* ptr to driver support function */

typedef struct drvet {  /* driver entry table */
    long number;        /* number of support routines */
    DRVSUPFUN report;   /* print report */
    DRVSUPFUN init;     /* init support */
    /* Any further functions are driver-specific */
} drvet;

#define DRVETNUMBER ( (sizeof(struct drvet) -sizeof(long))/sizeof(DRVSUPFUN) )

#endif /* USE_TYPED_DRVET */

#define S_drv_noDrvSup   (M_drvSup| 1) /*SDR_DRVSUP: Driver support missing*/
#define S_drv_noDrvet    (M_drvSup| 3) /*Missing driver support entry table*/

#endif