[unix-history] / usr / src / sys / sparc / include / param.h

/*
 * 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.
 *
 *	@(#)param.h	8.1 (Berkeley) 6/11/93
 *
 * from: $Header: param.h,v 1.13 92/11/26 02:04:38 torek Exp $ (LBL)
 */

/*
 * Machine dependent constants for Sun-4c (SPARCstation)
 */
#define	MACHINE	"sparc"

#ifdef KERNEL				/* XXX */
#include <machine/cpu.h>		/* XXX */
#endif					/* XXX */

/*
 * Round p (pointer or byte index) up to a correctly-aligned value for
 * the machine's strictest data type.  The result is u_int and must be
 * cast to any desired pointer type.
 */
#define	ALIGNBYTES	7
#define	ALIGN(p)	(((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES)

#define	NBPG		4096		/* bytes/page */
#define	PGOFSET		(NBPG-1)	/* byte offset into page */
#define	PGSHIFT		12		/* log2(NBPG) */

#define	KERNBASE	0xf8000000	/* start of kernel virtual space */
#define	KERNTEXTOFF	0xf8004000	/* start of kernel text */
#define	BTOPKERNBASE	((u_long)KERNBASE >> PG_SHIFT)

#define	DEV_BSIZE	512
#define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
#define	BLKDEV_IOSIZE	2048
#define	MAXPHYS		(64 * 1024)

#define	CLSIZE		1
#define	CLSIZELOG2	0

/* NOTE: SSIZE and UPAGES must be multiples of CLSIZE */
#define	SSIZE		1		/* initial stack size/NBPG */
#define	UPAGES		2		/* pages of u-area */

/*
 * Constants related to network buffer management.
 * MCLBYTES must be no larger than CLBYTES (the software page size), and,
 * on machines that exchange pages of input or output buffers with mbuf
 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
 * of the hardware page size.
 */
#define	MSIZE		128		/* size of an mbuf */
#define	MCLBYTES	2048		/* enough for whole Ethernet packet */
#define	MCLSHIFT	11		/* log2(MCLBYTES) */
#define	MCLOFSET	(MCLBYTES - 1)

#ifndef NMBCLUSTERS
#ifdef GATEWAY
#define	NMBCLUSTERS	512		/* map size, max cluster allocation */
#else
#define	NMBCLUSTERS	256		/* map size, max cluster allocation */
#endif
#endif

/*
 * Size of kernel malloc arena in CLBYTES-sized logical pages.
 */
#ifndef	NKMEMCLUSTERS
#define	NKMEMCLUSTERS	(6 * 1024 * 1024 / CLBYTES)
#endif

/* pages ("clicks") (4096 bytes) to disk blocks */
#define	ctod(x)	((x) << (PGSHIFT - DEV_BSHIFT))
#define	dtoc(x)	((x) >> (PGSHIFT - DEV_BSHIFT))
#define	dtob(x)	((x) << DEV_BSHIFT)

/* pages to bytes */
#define	ctob(x)	((x) << PGSHIFT)

/* bytes to pages */
#define	btoc(x)	(((unsigned)(x) + PGOFSET) >> PGSHIFT)

#define	btodb(bytes)		/* calculates (bytes / DEV_BSIZE) */ \
	((unsigned)(bytes) >> DEV_BSHIFT)
#define	dbtob(db)		/* calculates (db * DEV_BSIZE) */ \
	((unsigned)(db) << DEV_BSHIFT)

/*
 * Map a ``block device block'' to a file system block.
 * This should be device dependent, and should use the bsize
 * field from the disk label.
 * For now though just use DEV_BSIZE.
 */
#define	bdbtofsb(bn)	((bn) / (BLKDEV_IOSIZE / DEV_BSIZE))

#ifdef KERNEL
#ifndef LOCORE
#define	DELAY(n)	delay(n)
#endif
#else
#define	DELAY(n)	{ register volatile int N = (n); while (--N > 0); }
#endif
Commit	Line	Data
fe663dea	1	/*
ad787160 C	2	* Copyright (c) 1992, 1993
ad787160 C	3	* The Regents of the University of California. All rights reserved.
fe663dea CT	4	*
	5	* This software was developed by the Computer Systems Engineering group
	6	* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
	7	* contributed to Berkeley.
	8	*
b480239a KB	9	* All advertising materials mentioning features or use of this software
	10	* must display the following acknowledgement:
	11	* This product includes software developed by the University of
dc41e9e6	12	* California, Lawrence Berkeley Laboratory.
b480239a	13	*
ad787160 C	14	* Redistribution and use in source and binary forms, with or without
	15	* modification, are permitted provided that the following conditions
	16	* are met:
	17	* 1. Redistributions of source code must retain the above copyright
	18	* notice, this list of conditions and the following disclaimer.
	19	* 2. Redistributions in binary form must reproduce the above copyright
	20	* notice, this list of conditions and the following disclaimer in the
	21	* documentation and/or other materials provided with the distribution.
	22	* 3. All advertising materials mentioning features or use of this software
	23	* must display the following acknowledgement:
	24	* This product includes software developed by the University of
	25	* California, Berkeley and its contributors.
	26	* 4. Neither the name of the University nor the names of its contributors
	27	* may be used to endorse or promote products derived from this software
	28	* without specific prior written permission.
	29	*
	30	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	31	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	32	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	33	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	34	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	35	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	36	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	37	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	38	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	39	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	40	* SUCH DAMAGE.
fe663dea	41	*
ad787160	42	* @(#)param.h 8.1 (Berkeley) 6/11/93
fe663dea	43	*
d35066dd	44	* from: $Header: param.h,v 1.13 92/11/26 02:04:38 torek Exp $ (LBL)
fe663dea CT	45	*/
	46
	47	/*
	48	* Machine dependent constants for Sun-4c (SPARCstation)
	49	*/
	50	#define MACHINE "sparc"
	51
	52	#ifdef KERNEL /* XXX */
5548a02f	53	#include <machine/cpu.h> /* XXX */
fe663dea CT	54	#endif /* XXX */
	55
	56	/*
	57	* Round p (pointer or byte index) up to a correctly-aligned value for
	58	* the machine's strictest data type. The result is u_int and must be
	59	* cast to any desired pointer type.
	60	*/
	61	#define ALIGNBYTES 7
	62	#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES)
	63
	64	#define NBPG 4096 /* bytes/page */
	65	#define PGOFSET (NBPG-1) /* byte offset into page */
	66	#define PGSHIFT 12 /* log2(NBPG) */
	67
	68	#define KERNBASE 0xf8000000 /* start of kernel virtual space */
	69	#define KERNTEXTOFF 0xf8004000 /* start of kernel text */
	70	#define BTOPKERNBASE ((u_long)KERNBASE >> PG_SHIFT)
	71
	72	#define DEV_BSIZE 512
	73	#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
	74	#define BLKDEV_IOSIZE 2048
	75	#define MAXPHYS (64 * 1024)
	76
	77	#define CLSIZE 1
	78	#define CLSIZELOG2 0
	79
	80	/* NOTE: SSIZE and UPAGES must be multiples of CLSIZE */
	81	#define SSIZE 1 /* initial stack size/NBPG */
	82	#define UPAGES 2 /* pages of u-area */
	83
	84	/*
	85	* Constants related to network buffer management.
	86	* MCLBYTES must be no larger than CLBYTES (the software page size), and,
	87	* on machines that exchange pages of input or output buffers with mbuf
	88	* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
	89	* of the hardware page size.
	90	*/
	91	#define MSIZE 128 /* size of an mbuf */
	92	#define MCLBYTES 2048 /* enough for whole Ethernet packet */
	93	#define MCLSHIFT 11 /* log2(MCLBYTES) */
	94	#define MCLOFSET (MCLBYTES - 1)
	95
	96	#ifndef NMBCLUSTERS
	97	#ifdef GATEWAY
	98	#define NMBCLUSTERS 512 /* map size, max cluster allocation */
	99	#else
	100	#define NMBCLUSTERS 256 /* map size, max cluster allocation */
	101	#endif
	102	#endif
	103
	104	/*
	105	* Size of kernel malloc arena in CLBYTES-sized logical pages.
	106	*/
	107	#ifndef NKMEMCLUSTERS
dc41e9e6	108	#define NKMEMCLUSTERS (6 * 1024 * 1024 / CLBYTES)
fe663dea CT	109	#endif
	110
	111	/* pages ("clicks") (4096 bytes) to disk blocks */
	112	#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
	113	#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
	114	#define dtob(x) ((x) << DEV_BSHIFT)
	115
	116	/* pages to bytes */
	117	#define ctob(x) ((x) << PGSHIFT)
	118
	119	/* bytes to pages */
	120	#define btoc(x) (((unsigned)(x) + PGOFSET) >> PGSHIFT)
	121
	122	#define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
	123	((unsigned)(bytes) >> DEV_BSHIFT)
	124	#define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
	125	((unsigned)(db) << DEV_BSHIFT)
	126
	127	/*
	128	* Map a ``block device block'' to a file system block.
	129	* This should be device dependent, and should use the bsize
	130	* field from the disk label.
	131	* For now though just use DEV_BSIZE.
	132	*/
	133	#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE))
	134
	135	#ifdef KERNEL
	136	#ifndef LOCORE
	137	#define DELAY(n) delay(n)
	138	#endif
	139	#else
	140	#define DELAY(n) { register volatile int N = (n); while (--N > 0); }
	141	#endif