/*	$OpenBSD: pcivar.h,v 1.6 1996/04/18 23:48:08 niklas Exp $	*/
/*	$NetBSD: pcivar.h,v 1.8 1995/06/18 01:26:50 cgd Exp $	*/

/*
 * Copyright (c) 1994 Charles Hannum.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by Charles Hannum.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _DEV_PCI_PCIVAR_H_
#define	_DEV_PCI_PCIVAR_H_

/*
 * Definitions for PCI autoconfiguration.
 *
 * This file describes types and functions which are used for PCI
 * configuration.  Some of this information is machine-specific, and is
 * separated into pci_machdep.h.
 */

#include <machine/bus.h>

#if (alpha + i386 != 1)
ERROR: COMPILING FOR UNSUPPORTED MACHINE, OR MORE THAN ONE.
#endif

#if alpha
#include <alpha/pci/pci_machdep.h>
#endif

#if i386
#include <i386/pci/pci_machdep.h>
#endif

/*
 * The maximum number of devices on a PCI bus is 32.  However, some
 * PCI chipsets (e.g. chipsets that implement 'Configuration Mechanism #2'
 * on the i386) can't deal with that many, so let pci_machdep.h override it.
 */
#ifndef PCI_MAX_DEVICE_NUMBER
#define	PCI_MAX_DEVICE_NUMBER	32
#endif

/*
 * PCI bus attach arguments.
 */
struct pcibus_attach_args {
	char		*pba_busname;	/* XXX should be common */
	bus_chipset_tag_t pba_bc;	/* XXX should be common */

	int		pba_bus;	/* PCI bus number */
};

/*
 * PCI device attach arguments.
 */
struct pci_attach_args {
	bus_chipset_tag_t pa_bc;	/* bus chipset tag */

	int		pa_device;
	int		pa_function;
	pcitag_t	pa_tag;
	pcireg_t	pa_id, pa_class;
};

/*
 * Locators devices that attach to 'pcibus', as specified to config.
 */
#define	pcibuscf_bus		cf_loc[0]
#define	PCIBUS_UNK_BUS		-1		/* wildcarded 'bus' */

/*
 * Locators for PCI devices, as specified to config.
 */
#define	pcicf_dev		cf_loc[0]
#define	PCI_UNK_DEV		-1		/* wildcarded 'dev' */

#define	pcicf_function		cf_loc[1]
#define	PCI_UNK_FUNCTION	-1		/* wildcarded 'function' */

pcireg_t pci_conf_read __P((pcitag_t, int));
void	 pci_conf_write __P((pcitag_t, int, pcireg_t));
void	 pci_devinfo __P((pcireg_t, pcireg_t, int, char *));
pcitag_t pci_make_tag __P((int, int, int));
void	*pci_map_int __P((pcitag_t, int, int (*)(void *), void *, char *));
int	 pci_map_mem __P((pcitag_t, int, vm_offset_t *, vm_offset_t *));

#endif /* _DEV_PCI_PCIVAR_H_ */