xref: /src/sys/arch/sparc/include/autoconf.h

/*	$NetBSD: autoconf.h,v 1.51 2022/05/22 11:27:34 andvar Exp $ */

/*-
 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Paul Kranenburg.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``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 FOUNDATION OR CONTRIBUTORS
 * 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.
 */

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Lawrence Berkeley Laboratory.
 *
 * 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. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
 *
 *	@(#)autoconf.h	8.2 (Berkeley) 9/30/93
 */

#ifndef	_MACHINE_AUTOCONF_H_
#define	_MACHINE_AUTOCONF_H_

/*
 * Autoconfiguration information.
 */

#include <sys/bus.h>
#include <machine/bsd_openprom.h>
#include <machine/promlib.h>
#include <dev/sbus/sbusvar.h>

/*
 * Most devices are configured according to information kept in
 * the FORTH PROMs.  In particular, we extract the `name', `reg',
 * and `address' properties of each device attached to the mainbus;
 * other drives may also use this information.  The mainbus itself
 * (which `is' the CPU, in some sense) gets just the node, with a
 * fake name ("mainbus").
 */

/* Device register space description */
struct rom_reg {
	uint32_t	rr_iospace;	/* register space (obio, etc) */
	uint32_t	rr_paddr;	/* register physical address */
	uint32_t	rr_len;		/* register length */
};

/* Interrupt information */
struct rom_intr {
	uint32_t	int_pri;	/* priority (IPL) */
	uint32_t	int_vec;	/* vector (always 0?) */
};

/* Address translation across busses */
struct rom_range {		/* Only used on v3 PROMs */
	uint32_t	cspace;		/* Client space */
	uint32_t	coffset;	/* Client offset */
	uint32_t	pspace;		/* Parent space */
	uint32_t	poffset;	/* Parent offset */
	uint32_t	size;		/* Size in bytes of this range */
};

/* Attach arguments presented by mainbus_attach() */
struct mainbus_attach_args {
	bus_space_tag_t	ma_bustag;	/* parent bus tag */
	bus_dma_tag_t	ma_dmatag;
	const char	*ma_name;	/* PROM node name */
	int		ma_node;	/* PROM handle */
	bus_addr_t	ma_paddr;	/* register physical address */
	bus_size_t	ma_size;	/* register physical size */
	int		ma_pri;		/* priority (IPL) */
	void		*ma_promvaddr;	/* PROM virtual address, if any */
};

/* Attach arguments presented to devices by obio_attach() (sun4 only) */
struct obio4_attach_args {
	int		oba_placeholder;/* obio/sbus attach args sharing */
	bus_space_tag_t	oba_bustag;	/* parent bus tag */
	bus_dma_tag_t	oba_dmatag;
	bus_addr_t	oba_paddr;	/* register physical address */
	int		oba_pri;	/* interrupt priority (IPL) */
};

union obio_attach_args {
	/* sun4m obio space is treated like an sbus slot */
	int				uoba_isobio4;
	struct sbus_attach_args		uoba_sbus;	/* Sbus view */
	struct obio4_attach_args	uoba_oba4;	/* sun4 on-board view */
};

/* obio specific bus flag */
#define OBIO_BUS_MAP_USE_ROM	BUS_SPACE_MAP_BUS1

/* obio bus helper that finds ROM mappings; exported for autoconf.c */
int	obio_find_rom_map(bus_addr_t, int, bus_space_handle_t *);


/*
 * The matchbyname function is useful in drivers that are matched
 * by romaux name, i.e., all `mainbus attached' devices.  It expects
 * its aux pointer to point to a pointer to the name (the address of
 * a romaux structure suffices, for instance). (OBSOLETE)
 */
int	matchbyname(device_t, cfdata_t, void *);

/*
 * `clockfreq' produces a printable representation of a clock frequency
 * (this is just a frill).
 */
char	*clockfreq(int freq);

/* Openprom V2 style boot path */
struct bootpath {
	char	name[16];	/* name of this node */
	int	val[3];		/* up to three optional values */
	device_t dev;	/* device that recognised this component */
};

/* Parse a disk string into a dev_t, return device struct pointer */
device_t parsedisk(char *, int, int, dev_t *);

/* Establish a mountroot_hook, for benefit of floppy drive, mostly. */
void	mountroot_hook_establish(void (*)(device_t), device_t);

void	bootstrap(void);
int	romgetcursoraddr(int **, int **);

/* Exported from autoconf.c for other consumers.  */
extern char	machine_model[100];
extern struct sparc_bus_dma_tag mainbus_dma_tag;
extern struct sparc_bus_space_tag mainbus_space_tag;

#endif /* !_MACHINE_AUTOCONF_H_ */