/*
 * pnp.h  -  Definitions for rom PnP BIOS interface
 *
 * Copyright (C) 1998-2003 Gero Kuhlmann <gero@gkminix.han.de>
 *
 *  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
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: pnp.h,v 1.4 2003/01/25 23:29:43 gkminix Exp $
 */


/*
 * Offset to pointer to PnP expansion header
 */
#define PNP_HDROFS	0x001A



/*
 * Structure holding a PnP expansion header
 */
struct pnphdr {
	unsigned char	sig[4];		/* Header signature */
	unsigned char	revision;	/* Header structure revision */
	unsigned char	size;		/* Size of header in 16-byte-blocks */
	unsigned short	next;		/* Offset of next header */
	unsigned char	reserved1;
	unsigned char	chksum;		/* Header checksum */
	unsigned char	devid[4];	/* Device identifier */
	unsigned short	manufacturer;	/* Pointer to manufacturer string */
	unsigned short	productname;	/* Pointer to product name string */
	unsigned char	devtype[3];	/* Device type code */
	unsigned char	devind;		/* Device indicators */
	unsigned short	bcv;		/* Boot connection vector */
	unsigned short	dv;		/* Disconnect vector */
	unsigned short	bev;		/* Bootstrap entry vector */
	unsigned short	reserved2;
	unsigned short	sriv;		/* Static resource information vector */
};



/*
 * Flag mask for device indicator field
 */
#define DEVIND_DDIM	0x80		/* rom supports DDIM */
#define DEVIND_SHADOW	0x40		/* rom my be shadowed in ram */
#define DEVIND_CACHE	0x20		/* rom is read cacheable */
#define DEVIND_BOOT	0x10		/* rom only required for booting */
#define DEVIND_IPL	0x04		/* device is an IPL device */
#define DEVIND_INPUT	0x02		/* device is an input device */
#define DEVIND_DISP	0x01		/* device is a display device */