/* $NetBSD: param.h,v 1.2 1995/08/13 00:27:11 mycroft Exp $ */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1982, 1986, 1990, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * the Systems Programming Group of the University of Utah Computer * Science Department. * * 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: Utah $Hdr: machparam.h 1.16 92/12/20$ * * @(#)param.h 8.1 (Berkeley) 6/10/93 */ /* * Machine dependent constants for mvme68k, based on HP9000 series 300. */ #define MACHINE "mvme68k" #define MACHINE_ARCH "m68k" #define MID_MACHINE MID_M68K /* * 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 12 /* LOG2(NBPG) */ #define NBPG (1 << PGSHIFT) /* bytes/page */ #define PGOFSET (NBPG-1) /* byte offset into page */ #define NPTEPG (NBPG/(sizeof (pt_entry_t))) #define SEGSHIFT 22 /* LOG2(NBSEG) */ #define NBSEG (1 << SEGSHIFT) /* bytes/segment */ #define SEGOFSET (NBSEG-1) /* byte offset into segment */ #define KERNBASE 0x00000000 /* start of kernel virtual */ #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define DEV_BSIZE (1 << DEV_BSHIFT) #define BLKDEV_IOSIZE 2048 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ #define CLSIZELOG2 0 #define CLSIZE (1 << CLSIZELOG2) /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ #define SSIZE 1 /* initial stack size/NBPG */ #define SINCR 1 /* increment of stack/NBPG */ #define UPAGES 3 /* pages of u-area */ #define USPACE (UPAGES * NBPG) /* total size 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 MCLSHIFT 11 #define MCLBYTES (1 << MCLSHIFT) /* large enough for ether MTU */ #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 (2048 * 1024 / CLBYTES) #endif /* pages ("clicks") to disk blocks */ #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) /* pages to bytes */ #define ctob(x) ((x) << PGSHIFT) #define btoc(x) (((x) + PGOFSET) >> PGSHIFT) /* bytes to disk blocks */ #define dbtob(x) ((x) << DEV_BSHIFT) #define btodb(x) ((x) >> 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)) /* * Mach derived conversion macros */ #define m68k_round_page(x) ((((unsigned)(x)) + PGOFSET) & ~PGOFSET) #define m68k_trunc_page(x) ((unsigned)(x) & ~PGOFSET) #define m68k_btop(x) ((unsigned)(x) >> PGSHIFT) #define m68k_ptob(x) ((unsigned)(x) << PGSHIFT) /* * spl functions; all but spl0 are done in-line */ #include #define _spl(s) \ ({ \ register int _spl_r; \ \ __asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ "&=d" (_spl_r) : "di" (s)); \ _spl_r; \ }) /* spl0 requires checking for software interrupts */ #define spl1() _spl(PSL_S|PSL_IPL1) #define spl2() _spl(PSL_S|PSL_IPL2) #define spl3() _spl(PSL_S|PSL_IPL3) #define spl4() _spl(PSL_S|PSL_IPL4) #define spl5() _spl(PSL_S|PSL_IPL5) #define spl6() _spl(PSL_S|PSL_IPL6) #define spl7() _spl(PSL_S|PSL_IPL7) #define splsoftclock() spl1() #define splsoftnet() spl1() #define splbio() spl2() #define splnet() spl3() #define spltty() spl3() #define splimp() spl3() #define splclock() spl5() #define splstatclock() spl5() #define splvm() spl5() #define splhigh() spl7() #define splsched() spl7() /* watch out for side effects */ #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) #ifdef _KERNEL #ifndef LOCORE int cpuspeed; #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } #endif #endif