/*
 * (C) Copyright 2002
 * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

#include <linux/types.h>	       /* for ulong typedef */

#ifndef _FPGA_H_
#define _FPGA_H_

#ifndef CONFIG_MAX_FPGA_DEVICES
#define CONFIG_MAX_FPGA_DEVICES		5
#endif

/* these probably belong somewhere else */
#ifndef FALSE
#define FALSE			(0)
#endif
#ifndef TRUE
#define TRUE			(!FALSE)
#endif

/* CONFIG_FPGA bit assignments */
#define CFG_FPGA_MAN(x)		(x)
#define CFG_FPGA_DEV(x)		((x) << 8 )
#define CFG_FPGA_IF(x)		((x) << 16 )

/* FPGA Manufacturer bits in CONFIG_FPGA */
#define CFG_FPGA_XILINX		CFG_FPGA_MAN( 0x1 )
#define CFG_FPGA_ALTERA		CFG_FPGA_MAN( 0x2 )


/* fpga_xxxx function return value definitions */
#define FPGA_SUCCESS		0
#define FPGA_FAIL		-1

/* device numbers must be non-negative */
#define FPGA_INVALID_DEVICE	-1

/* root data type defintions */
typedef enum {			/* typedef fpga_type */
	fpga_min_type,		/* range check value */
	fpga_xilinx,		/* Xilinx Family) */
	fpga_altera,		/* unimplemented */
	fpga_undefined		/* invalid range check value */
} fpga_type;			/* end, typedef fpga_type */

typedef struct {		/* typedef fpga_desc */
	fpga_type devtype;	/* switch value to select sub-functions */
	void *devdesc;		/* real device descriptor */
} fpga_desc;			/* end, typedef fpga_desc */


/* root function definitions */
extern void fpga_init( ulong reloc_off );
extern int fpga_add( fpga_type devtype, void *desc );
extern int fpga_count( void );
extern int fpga_load( int devnum, void *buf, size_t bsize );
extern int fpga_dump( int devnum, void *buf, size_t bsize );
extern int fpga_info( int devnum );

#endif	/* _FPGA_H_ */