sparc/include/autoconf.h

/*	$NetBSD: autoconf.h,v 1.15 1996/03/31 22:12:34 pk Exp $ */

/*
 * 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. 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, Berkeley and its contributors.
 * 4. 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
 */

/*
 * Autoconfiguration information.
 */

/*
 * 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").
 */

#define	RA_MAXVADDR	8		/* max (virtual) addresses per device */
#define	RA_MAXREG	16		/* max # of register banks per device */
#define	RA_MAXINTR	8		/* max interrupts per device */
#define RA_MAXRANGE	10		/* max # of bus translations */

struct romaux {
	const char *ra_name;		/* name from FORTH PROM */
	int	ra_node;		/* FORTH PROM node ID */
	void	*ra_vaddrs[RA_MAXVADDR];/* ROM mapped virtual addresses */
	int	ra_nvaddrs;		/* # of ra_vaddrs[]s, may be 0 */
#define ra_vaddr	ra_vaddrs[0]	/* compatibility */

	struct rom_reg {
		int	rr_iospace;	/* register space (obio, etc) */
		void	*rr_paddr;	/* register physical address */
		int	rr_len;		/* register length */
	} ra_reg[RA_MAXREG];
	int	ra_nreg;		/* # of ra_reg[]s */
#define ra_iospace	ra_reg[0].rr_iospace
#define ra_paddr	ra_reg[0].rr_paddr
#define ra_len		ra_reg[0].rr_len

	struct rom_intr {		/* interrupt information: */
		int	int_pri;		/* priority (IPL) */
		int	int_vec;		/* vector (always 0?) */
	} ra_intr[RA_MAXINTR];
	int	ra_nintr;		/* number of interrupt info elements */

	struct rom_range {		/* Only used on v3 PROMs */
		u_int32_t	cspace;		/* Client space */
		u_int32_t	coffset;	/* Client offset */
		u_int32_t	pspace;		/* Parent space */
		u_int32_t	poffset;	/* Parent offset */
		u_int32_t	size;		/* Size in bytes of this range */
	} ra_range[RA_MAXRANGE];
	int	ra_nrange;

	struct	bootpath *ra_bp;	/* used for locating boot device */
};


struct confargs {
	int	ca_bustype;
	struct	romaux ca_ra;
	int	ca_slot;
	int	ca_offset;
};
#define BUS_MAIN	0
#define BUS_OBIO	1
#define BUS_VME16	2
#define BUS_VME32	3
#define BUS_SBUS	4

extern int bt2pmt[];

/*
 * mapiodev maps an I/O device to a virtual address, returning the address.
 * mapdev does the real work: you can supply a special virtual address and
 * it will use that instead of creating one, but you must only do this if
 * you get it from ../sparc/vaddrs.h.
 */
void	*mapdev __P((struct rom_reg *pa, int va,
		     int offset, int size, int bustype));
#define	mapiodev(pa, offset, size, bustype) \
	mapdev(pa, 0, offset, size, bustype)
/*
 * REG2PHYS is provided for drivers with a `d_mmap' function.
 */
#define REG2PHYS(rr, offset, bt)				\
	(((u_int)(rr)->rr_paddr + (offset)) |			\
		((CPU_ISSUN4M)					\
			? ((rr)->rr_iospace << PMAP_SHFT4M)	\
			: bt2pmt[bt])				\
	)

/* For VME and sun4/obio busses */
void	*bus_map __P((struct rom_reg *, int, int));
void	*bus_tmp __P((void *, int));
void	bus_untmp __P((void));

/*
 * The various getprop* functions obtain `properties' from the ROMs.
 * getprop() obtains a property as a byte-sequence, and returns its
 * length; the others convert or make some other guarantee.
 */
int	getprop __P((int node, char *name, void *buf, int bufsiz));
char	*getpropstring __P((int node, char *name));
int	getpropint __P((int node, char *name, int deflt));

/* Frequently used options node */
extern int optionsnode;

/*
 * The romprop function gets physical and virtual addresses from the PROM
 * and fills in a romaux.  It returns 1 on success, 0 if the physical
 * address is not available as a "reg" property.
 */
int	romprop __P((struct romaux *ra, const char *name, int node));

/*
 * 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).
 */
struct device;
int	matchbyname __P((struct device *, void *cf, void *aux));

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

/*
 * Memory description arrays.  Shared between pmap.c and autoconf.c; no
 * one else should use this (except maybe mem.c, e.g., if we fix the VM to
 * handle discontiguous physical memory).
 */
struct memarr {
	u_int	addr;
	u_int	len;
};
int	makememarr(struct memarr *, int max, int which);
#define	MEMARR_AVAILPHYS	0
#define	MEMARR_TOTALPHYS	1

/* Pass a string to the FORTH interpreter.  May fail silently. */
void	rominterpret __P((char *));

/* Openprom V2 style boot path */
struct bootpath {
	char	name[16];		/* name of this node */
	int	val[2];			/* up to two optional values */
};

struct device *bootdv;			/* found during autoconfiguration */

struct bootpath	*bootpath_store __P((int, struct bootpath *));
int		sd_crazymap __P((int));

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

/* Establish a mountroot_hook, for benefit of floppy drive, mostly. */
void	mountroot_hook_establish __P((void (*func) __P((struct device *)),
		struct device *));

void	configure __P((void));
void	bootstrap __P((void));
int	firstchild __P((int));
int	nextsibling __P((int));
void	callrom __P((void));
struct device *getdevunit __P((char *, int));
void   *findzs __P((int));
int	romgetcursoraddr __P((int **, int **));
int	findroot __P((void));
int	findnode __P((int, const char *));
int	opennode __P((char *));
int	node_has_property __P((int, const char *));