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param.h revision 1.15
      1   1.1  glass /*
      2   1.8  glass  * Copyright (c) 1993 Adam Glass
      3   1.1  glass  * Copyright (c) 1988 University of Utah.
      4  1.15    gwr  * Copyright (c) 1982, 1986, 1990, 1993
      5  1.15    gwr  *	The Regents of the University of California.  All rights reserved.
      6   1.1  glass  *
      7   1.1  glass  * This code is derived from software contributed to Berkeley by
      8   1.1  glass  * the Systems Programming Group of the University of Utah Computer
      9   1.1  glass  * Science Department.
     10   1.1  glass  *
     11   1.1  glass  * Redistribution and use in source and binary forms, with or without
     12   1.1  glass  * modification, are permitted provided that the following conditions
     13   1.1  glass  * are met:
     14   1.1  glass  * 1. Redistributions of source code must retain the above copyright
     15   1.1  glass  *    notice, this list of conditions and the following disclaimer.
     16   1.1  glass  * 2. Redistributions in binary form must reproduce the above copyright
     17   1.1  glass  *    notice, this list of conditions and the following disclaimer in the
     18   1.1  glass  *    documentation and/or other materials provided with the distribution.
     19   1.1  glass  * 3. All advertising materials mentioning features or use of this software
     20   1.1  glass  *    must display the following acknowledgement:
     21   1.1  glass  *	This product includes software developed by the University of
     22   1.1  glass  *	California, Berkeley and its contributors.
     23   1.1  glass  * 4. Neither the name of the University nor the names of its contributors
     24   1.1  glass  *    may be used to endorse or promote products derived from this software
     25   1.1  glass  *    without specific prior written permission.
     26   1.1  glass  *
     27   1.1  glass  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     28   1.1  glass  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     29   1.1  glass  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     30   1.1  glass  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     31   1.1  glass  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32   1.1  glass  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33   1.1  glass  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34   1.1  glass  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     35   1.1  glass  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     36   1.1  glass  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     37   1.1  glass  * SUCH DAMAGE.
     38   1.1  glass  *
     39  1.15    gwr  *	from: Utah Hdr: machparam.h 1.16 92/12/20
     40  1.15    gwr  *	from: @(#)param.h	8.1 (Berkeley) 6/10/93
     41  1.15    gwr  *	$Id: param.h,v 1.15 1994/05/27 14:55:22 gwr Exp $
     42   1.1  glass  */
     43   1.1  glass 
     44   1.1  glass /*
     45   1.1  glass  * Machine dependent constants for HP9000 series 300.
     46   1.1  glass  */
     47   1.1  glass #define	MACHINE     "sun3"
     48  1.11  glass #define	MACHINE_ARCH	"m68k"
     49  1.10  glass #define MID_MACHINE MID_M68K
     50  1.11  glass 
     51   1.1  glass /*
     52   1.1  glass  * Round p (pointer or byte index) up to a correctly-aligned value
     53   1.1  glass  * for all data types (int, long, ...).   The result is u_int and
     54   1.1  glass  * must be cast to any desired pointer type.
     55   1.1  glass  */
     56  1.15    gwr #define	ALIGNBYTES	3
     57  1.15    gwr #define	ALIGN(p)	(((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
     58   1.1  glass 
     59   1.1  glass #define	NBPG		8192		/* bytes/page */
     60   1.1  glass #define	PGOFSET		(NBPG-1)	/* byte offset into page */
     61   1.1  glass #define	PGSHIFT		13		/* LOG2(NBPG) */
     62  1.15    gwr 
     63  1.15    gwr #define NBSG		0x20000	/* bytes/segment */
     64  1.15    gwr #define	SEGOFSET	(NBSG-1)	/* byte offset into segment */
     65   1.3  glass #define SEGSHIFT	17	        /* LOG2(NBSG) */
     66   1.1  glass 
     67  1.15    gwr #define	KERNBASE	0x0E000000	/* start of kernel virtual */
     68  1.15    gwr #define	BTOPKERNBASE	((u_long)KERNBASE >> PGSHIFT)
     69   1.1  glass 
     70   1.1  glass #define	DEV_BSIZE	512
     71   1.1  glass #define	DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
     72   1.1  glass #define BLKDEV_IOSIZE	2048
     73   1.1  glass #define	MAXPHYS		(64 * 1024)	/* max raw I/O transfer size */
     74   1.1  glass 
     75   1.1  glass #define	CLSIZE		1
     76   1.1  glass #define	CLSIZELOG2	0
     77   1.1  glass 
     78   1.1  glass /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
     79   1.1  glass #define	SSIZE		1		/* initial stack size/NBPG */
     80   1.1  glass #define	SINCR		1		/* increment of stack/NBPG */
     81   1.1  glass 
     82   1.1  glass #define	UPAGES		3		/* pages of u-area */
     83   1.1  glass 
     84   1.9  glass #define CLOCK_VA            (0x0FFE0000+(UPAGES*NBPG*2))
     85   1.9  glass #define INTERREG_VA         (0x0FFE0000+(UPAGES*NBPG*2)+NBPG)
     86   1.9  glass 
     87   1.1  glass /*
     88   1.1  glass  * Constants related to network buffer management.
     89   1.1  glass  * MCLBYTES must be no larger than CLBYTES (the software page size), and,
     90   1.1  glass  * on machines that exchange pages of input or output buffers with mbuf
     91   1.1  glass  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
     92   1.1  glass  * of the hardware page size.
     93   1.1  glass  */
     94   1.1  glass #define	MSIZE		128		/* size of an mbuf */
     95  1.15    gwr #define	MCLBYTES	2048		/* large enough for ether MTU */
     96  1.15    gwr #define	MCLSHIFT	11
     97   1.1  glass #define	MCLOFSET	(MCLBYTES - 1)
     98   1.1  glass #ifndef NMBCLUSTERS
     99   1.1  glass #ifdef GATEWAY
    100   1.1  glass #define	NMBCLUSTERS	512		/* map size, max cluster allocation */
    101   1.1  glass #else
    102   1.1  glass #define	NMBCLUSTERS	256		/* map size, max cluster allocation */
    103   1.1  glass #endif
    104   1.1  glass #endif
    105   1.1  glass 
    106   1.1  glass /*
    107   1.1  glass  * Size of kernel malloc arena in CLBYTES-sized logical pages
    108   1.1  glass  */
    109   1.1  glass #ifndef NKMEMCLUSTERS
    110   1.1  glass #define	NKMEMCLUSTERS	(2048*1024/CLBYTES)
    111   1.1  glass #endif
    112   1.1  glass 
    113   1.1  glass /* pages ("clicks") (4096 bytes) to disk blocks */
    114   1.1  glass #define	ctod(x)	((x)<<(PGSHIFT-DEV_BSHIFT))
    115   1.1  glass #define	dtoc(x)	((x)>>(PGSHIFT-DEV_BSHIFT))
    116   1.1  glass #define	dtob(x)	((x)<<DEV_BSHIFT)
    117   1.1  glass 
    118   1.1  glass /* pages to bytes */
    119   1.1  glass #define	ctob(x)	((x)<<PGSHIFT)
    120   1.1  glass 
    121   1.1  glass /* bytes to pages */
    122   1.1  glass #define	btoc(x)	(((unsigned)(x)+(NBPG-1))>>PGSHIFT)
    123   1.1  glass 
    124   1.1  glass #define	btodb(bytes)	 		/* calculates (bytes / DEV_BSIZE) */ \
    125   1.1  glass 	((unsigned)(bytes) >> DEV_BSHIFT)
    126   1.1  glass #define	dbtob(db)			/* calculates (db * DEV_BSIZE) */ \
    127   1.1  glass 	((unsigned)(db) << DEV_BSHIFT)
    128   1.1  glass 
    129   1.1  glass /*
    130   1.1  glass  * Map a ``block device block'' to a file system block.
    131   1.1  glass  * This should be device dependent, and should use the bsize
    132   1.1  glass  * field from the disk label.
    133   1.1  glass  * For now though just use DEV_BSIZE.
    134   1.1  glass  */
    135   1.1  glass #define	bdbtofsb(bn)	((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
    136   1.1  glass 
    137   1.3  glass /*
    138   1.3  glass  * Mach derived conversion macros
    139   1.3  glass  */
    140   1.3  glass #define sun3_round_seg(x)	((((unsigned)(x)) + NBSG - 1) & ~(NBSG-1))
    141   1.3  glass #define sun3_trunc_seg(x)	((unsigned)(x) & ~(NBSG-1))
    142   1.5  glass #define sun3_round_up_seg(x)	(sun3_trunc_seg(x) + NBSG)
    143  1.15    gwr #define sun3_btos(x)		((unsigned)(x) >> SEGSHIFT)
    144  1.15    gwr #define sun3_stob(x)		((unsigned)(x) << SEGSHIFT)
    145  1.15    gwr 
    146   1.3  glass #define sun3_round_page(x)	((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
    147   1.3  glass #define sun3_trunc_page(x)	((unsigned)(x) & ~(NBPG-1))
    148   1.5  glass #define sun3_round_up_page(x)	(sun3_round_page(x) + NBPG)
    149   1.3  glass #define sun3_btop(x)		((unsigned)(x) >> PGSHIFT)
    150   1.3  glass #define sun3_ptob(x)		((unsigned)(x) << PGSHIFT)
    151   1.5  glass 
    152   1.1  glass /*
    153   1.1  glass  * spl functions; all but spl0 are done in-line
    154   1.1  glass  */
    155  1.15    gwr #include <machine/psl.h>
    156   1.1  glass 
    157   1.2  glass #ifdef __GNUC__
    158   1.1  glass #define _spl(s) \
    159   1.1  glass ({ \
    160   1.1  glass         register int _spl_r; \
    161   1.1  glass \
    162   1.1  glass         asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
    163   1.1  glass                 "&=d" (_spl_r) : "di" (s)); \
    164   1.1  glass         _spl_r; \
    165   1.1  glass })
    166   1.2  glass #endif
    167   1.1  glass /* spl0 requires checking for software interrupts */
    168   1.1  glass #define spl1()  _spl(PSL_S|PSL_IPL1)
    169   1.1  glass #define spl2()  _spl(PSL_S|PSL_IPL2)
    170   1.1  glass #define spl3()  _spl(PSL_S|PSL_IPL3)
    171   1.1  glass #define spl4()  _spl(PSL_S|PSL_IPL4)
    172   1.1  glass #define spl5()  _spl(PSL_S|PSL_IPL5)
    173   1.1  glass #define spl6()  _spl(PSL_S|PSL_IPL6)
    174   1.1  glass #define spl7()  _spl(PSL_S|PSL_IPL7)
    175   1.1  glass 
    176   1.1  glass #define splsoftclock()  spl1()
    177   1.6  glass #define splnet()        spl3()
    178   1.6  glass #define splbio()        spl2()
    179  1.13  glass #define splimp()        spl3()
    180  1.12  glass #define spltty()        spl2()
    181  1.13  glass #define splzs()         spl6()
    182   1.6  glass #define splclock()      spl5()
    183  1.10  glass #define splstatclock()  splclock()
    184  1.13  glass #define splvm()         splimp()
    185   1.1  glass #define splhigh()       spl7()
    186   1.1  glass #define splsched()      spl7()
    187   1.1  glass 
    188   1.1  glass /* watch out for side effects */
    189   1.1  glass #define splx(s)         (s & PSL_IPL ? _spl(s) : spl0())
    190   1.1  glass 
    191   1.1  glass #ifdef KERNEL
    192   1.1  glass #ifndef LOCORE
    193  1.14    gwr #define	DELAY(n)	delay(n)
    194   1.1  glass #endif
    195   1.1  glass 
    196   1.1  glass #else
    197   1.1  glass #define	DELAY(n)	{ register int N = (n); while (--N > 0); }
    198   1.1  glass #endif
    199