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autoconf.h revision 1.8 
      1 /*	$NetBSD: autoconf.h,v 1.8 1995/02/01 12:37:44 pk Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1992, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This software was developed by the Computer Systems Engineering group
      8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      9  * contributed to Berkeley.
     10  *
     11  * All advertising materials mentioning features or use of this software
     12  * must display the following acknowledgement:
     13  *	This product includes software developed by the University of
     14  *	California, Lawrence Berkeley Laboratory.
     15  *
     16  * Redistribution and use in source and binary forms, with or without
     17  * modification, are permitted provided that the following conditions
     18  * are met:
     19  * 1. Redistributions of source code must retain the above copyright
     20  *    notice, this list of conditions and the following disclaimer.
     21  * 2. Redistributions in binary form must reproduce the above copyright
     22  *    notice, this list of conditions and the following disclaimer in the
     23  *    documentation and/or other materials provided with the distribution.
     24  * 3. All advertising materials mentioning features or use of this software
     25  *    must display the following acknowledgement:
     26  *	This product includes software developed by the University of
     27  *	California, Berkeley and its contributors.
     28  * 4. Neither the name of the University nor the names of its contributors
     29  *    may be used to endorse or promote products derived from this software
     30  *    without specific prior written permission.
     31  *
     32  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     33  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     34  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     35  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     36  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     37  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     38  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     39  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     40  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     41  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     42  * SUCH DAMAGE.
     43  *
     44  *	@(#)autoconf.h	8.2 (Berkeley) 9/30/93
     45  */
     46 
     47 /*
     48  * Autoconfiguration information.
     49  */
     50 
     51 /*
     52  * Most devices are configured according to information kept in
     53  * the FORTH PROMs.  In particular, we extract the `name', `reg',
     54  * and `address' properties of each device attached to the mainbus;
     55  * other drives may also use this information.  The mainbus itself
     56  * (which `is' the CPU, in some sense) gets just the node, with a
     57  * fake name ("mainbus").
     58  */
     59 #define	RA_MAXREG	2		/* max # of register banks per device */
     60 #define	RA_MAXINTR	8		/* max interrupts per device */
     61 struct romaux {
     62 	const char *ra_name;		/* name from FORTH PROM */
     63 	int	ra_node;		/* FORTH PROM node ID */
     64 	void	*ra_vaddr;		/* ROM mapped virtual address, or 0 */
     65 	struct rom_reg {
     66 		int	rr_iospace;	/* register space (obio, etc) */
     67 		void	*rr_paddr;	/* register physical address */
     68 		int	rr_len;		/* register length */
     69 	} ra_reg[RA_MAXREG];
     70 	int	ra_nreg;		/* # of ra_reg[]s */
     71 #define ra_iospace	ra_reg[0].rr_iospace
     72 #define ra_paddr	ra_reg[0].rr_paddr
     73 #define ra_len		ra_reg[0].rr_len
     74 	struct rom_intr {		/* interrupt information: */
     75 		int	int_pri;		/* priority (IPL) */
     76 		int	int_vec;		/* vector (always 0?) */
     77 	} ra_intr[RA_MAXINTR];
     78 	int	ra_nintr;		/* number of interrupt info elements */
     79 	struct	bootpath *ra_bp;	/* used for locating boot device */
     80 };
     81 
     82 
     83 struct confargs {
     84 	int	ca_bustype;
     85 	struct	romaux ca_ra;
     86 	int	ca_slot;
     87 	int	ca_offset;
     88 };
     89 #define BUS_MAIN	0
     90 #define BUS_OBIO	1
     91 #define BUS_VME16	2
     92 #define BUS_VME32	3
     93 #define BUS_SBUS	4
     94 
     95 extern int bt2pmt[];
     96 
     97 /*
     98  * The various getprop* functions obtain `properties' from the ROMs.
     99  * getprop() obtains a property as a byte-sequence, and returns its
    100  * length; the others convert or make some other guarantee.
    101  */
    102 int	getprop __P((int node, char *name, void *buf, int bufsiz));
    103 char	*getpropstring __P((int node, char *name));
    104 int	getpropint __P((int node, char *name, int deflt));
    105 
    106 /* Frequently used options node */
    107 extern int optionsnode;
    108 
    109 /*
    110  * The romprop function gets physical and virtual addresses from the PROM
    111  * and fills in a romaux.  It returns 1 on success, 0 if the physical
    112  * address is not available as a "reg" property.
    113  */
    114 int	romprop __P((struct romaux *ra, const char *name, int node));
    115 
    116 /*
    117  * The matchbyname function is useful in drivers that are matched
    118  * by romaux name, i.e., all `mainbus attached' devices.  It expects
    119  * its aux pointer to point to a pointer to the name (the address of
    120  * a romaux structure suffices, for instance).
    121  */
    122 int	matchbyname __P((struct device *, void *cf, void *aux));
    123 
    124 /*
    125  * `clockfreq' produces a printable representation of a clock frequency
    126  * (this is just a frill).
    127  */
    128 char	*clockfreq __P((int freq));
    129 
    130 /*
    131  * mapiodev maps an I/O device to a virtual address, returning the address.
    132  * mapdev does the real work: you can supply a special virtual address and
    133  * it will use that instead of creating one, but you must only do this if
    134  * you get it from ../sparc/vaddrs.h.
    135  */
    136 void	*mapdev __P((void *pa, int va, int size, int bustype));
    137 #define	mapiodev(pa, size, bustype)	mapdev(pa, 0, size, bustype)
    138 
    139 /*
    140  * Memory description arrays.  Shared between pmap.c and autoconf.c; no
    141  * one else should use this (except maybe mem.c, e.g., if we fix the VM to
    142  * handle discontiguous physical memory).
    143  */
    144 struct memarr {
    145 	u_int	addr;
    146 	u_int	len;
    147 };
    148 int	makememarr(struct memarr *, int max, int which);
    149 #define	MEMARR_AVAILPHYS	0
    150 #define	MEMARR_TOTALPHYS	1
    151 
    152 /* Pass a string to the FORTH interpreter.  May fail silently. */
    153 void	rominterpret __P((char *));
    154 
    155 /* Openprom V2 style boot path */
    156 struct bootpath {
    157 	char	name[8];		/* name of this node */
    158 	int	val[2];			/* up to two optional values */
    159 };
    160 
    161 struct device *bootdv;			/* found during autoconfiguration */
    162 
    163 /* Parse a disk string into a dev_t, return device struct pointer */
    164 struct	device *parsedisk __P((char *, int, int, dev_t *));
    165