/*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * Modified for VAX 940213/Ragge * * This code is derived from software contributed to Berkeley by * William Jolitz. * * 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. * * from: @(#)param.h 5.8 (Berkeley) 6/28/91 * $Id: param.h,v 1.2 1994/08/16 23:41:54 ragge Exp $ */ #ifndef PARAM_H #define PARAM_H #include "psl.h" /* * Machine dependent constants for VAX. */ #define MACHINE "vax" #define MID_MACHINE MID_VAX #define UNIX "vmunix" /* * Round p (pointer or byte index) up to a correctly-aligned value * for all data types (int, long, ...). The result is u_int and * must be cast to any desired pointer type. */ #define ALIGNBYTES (sizeof(int) - 1) #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) #define PGSHIFT 9 /* LOG2(NBPG) */ #define NBPG (1<> PGSHIFT) #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define DEV_BSIZE (1 << DEV_BSHIFT) #define BLKDEV_IOSIZE 2048 #define MAXPHYS (63 * 1024) /* max raw I/O transfer size */ #define CLSIZELOG2 1 #define CLSIZE 2 /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ #define SSIZE 4 /* initial stack size/NBPG */ #define SINCR 4 /* increment of stack/NBPG */ #define UPAGES 16 /* 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. */ #ifndef MSIZE #define MSIZE 128 /* size of an mbuf */ #endif /* MSIZE */ #ifndef MCLSHIFT #define MCLSHIFT 10 /* convert bytes to m_buf clusters */ #endif /* MCLSHIFT */ #define MCLBYTES (1 << MCLSHIFT) /* size of an m_buf cluster */ #define MCLOFSET (MCLBYTES - 1) /* offset within an m_buf cluster */ #ifndef NMBCLUSTERS #ifdef GATEWAY #define NMBCLUSTERS 512 /* map size, max cluster allocation */ #else #define NMBCLUSTERS 256 /* map size, max cluster allocation */ #endif /* GATEWAY */ #endif /* NMBCLUSTERS */ /* * Size of kernel malloc arena in CLBYTES-sized logical pages */ #ifndef NKMEMCLUSTERS #define NKMEMCLUSTERS (512*1024/CLBYTES) #endif /* * Some macros for units conversion */ /* Core clicks (512 bytes) to segments and vice versa */ #define ctos(x) (x) #define stoc(x) (x) /* Core clicks (512 bytes) to disk blocks */ #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) #define dtob(x) ((x)<>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 will be if we * add an entry to cdevsw/bdevsw for that purpose. * For now though just use DEV_BSIZE. */ #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) /* * Mach derived conversion macros */ #define vax_round_pdr(x) ((((unsigned)(x)) + NBPDR - 1) & ~(NBPDR-1)) #define vax_trunc_pdr(x) ((unsigned)(x) & ~(NBPDR-1)) #define vax_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) #define vax_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) #define vax_btod(x) ((unsigned)(x) >> PDRSHIFT) #define vax_dtob(x) ((unsigned)(x) << PDRSHIFT) #define vax_btop(x) ((unsigned)(x) >> PGSHIFT) #define vax_ptob(x) ((unsigned)(x) << PGSHIFT) #define DELAY(x) kern_delay(x) /* #define _spl(s) \ ({ \ register int _spl_r; \ \ asm __volatile ("mfpr $18,%0; mtpr $%1,$18; " : \ "&=r" (_spl_r) : "ir" (s)); \ _spl_r; \ }) */ /* spl0 requires checking for software interrupts */ #define splsoftclock() _spl(PSL2IPL(PSL_IPL08)) #define splnet() _spl(PSL2IPL(PSL_IPL0C)) #define spl4() _spl(PSL2IPL(PSL_IPL14)) #define spltty() _spl(PSL2IPL(PSL_IPL15)) #define splbio() _spl(PSL2IPL(PSL_IPL15)) #define splimp() _spl(PSL2IPL(PSL_IPL16)) #define splclock() _spl(PSL2IPL(PSL_IPL18)) #define splhigh() _spl(PSL2IPL(PSL_IPL1F)) #define splstatclock() splclock() /* #define splvm() _spl(PSL2IPL(PSL_IPL14)) #define splsched() _spl(PSL2IPL(PSL_IPL14)) */ /* watch out for side effects */ #define splx(s) (s ? _spl(s) : spl0()) #define ovbcopy(x,y,z) bcopy(x,y,z) /* This should work i hope... */ #endif