#ifndef DEV_MCH_H
#define DEV_MCH_H

#include <dbCommon.h>
#include <dbScan.h>
#include <epicsMutex.h>
#include <epicsTypes.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
#define SUCCESS    0
#define NO_CONVERT 2  Return value for ai record
#define ERROR     -1
*/

/* device support return values
ai: init
    read
	0: Success. A new raw value is placed in RVAL. convert will be called. 
	2: Success, but don't call convert. This is useful if read_ai obtains a value already converted to engineering units or in the event a hardware failure is detected. 
	Other: Error. 
bi: init
    read
	0: Success. A new raw value is placed in RVAL. The record support module forces VAL to be (0,1) if RVAL is (0, not 0). 
	2: Success, but don't modify VAL. 
	other: Error. 
bo: init
	0: Success. RVAL modified (VAL will be set accordingly)
	2: Success. VAL modified 
	other: Error. 
    write
	0: Success. 
	other: Error. 
longin: init
        read
	    0: Success. A new value is placed in VAL.
	    Other: Error. 
longout: init
	 read
		0: Success.
		Other: Error. 
*/

#define RESET_TIMEOUT 180 /* seconds */

/* Some arbitrary sizes */
#define MAX_NAME_LENGTH 50 
#define MAX_TASK_LENGTH 10

IOSCANPVT drvMchStatScan;
IOSCANPVT drvMchInitScan;
IOSCANPVT drvMchFruScan;

/* Much of this stolen from devBusMapped */

/* Per-MCH information kept in the registry */
typedef struct MchDevRec_ {
	epicsMutexId  mutex;     /* any other driver/devSup sharing resources must with devMch MUST LOCK THIS MUTEX when
                                    performing modifications or non-atomical reads. */                                   
	void         *udata;	 /* for use by the driver / user */
	const char    name[MAX_NAME_LENGTH]; /* space for the terminating NULL; the entire string is appended here, however. */
} MchDevRec, *MchDev;

/* Data private to IPMI MCH device support; to be stored in record's DPVT field */
typedef struct MchRec_ {
	MchDev      mch;
        char        task[MAX_TASK_LENGTH]; /* operation type */
} *MchRec;


MchDev
devMchRegister(const char *name);

/* Find the structure of a registered MCH by name */
MchDev
devMchFind(const char *name);

#ifdef __cplusplus
};
#endif

#endif