/* $NetBSD: param.h,v 1.24 1995/03/18 07:23:54 cgd Exp $ */ /* * Copyright (c) 1994 Gordon W. Ross * Copyright (c) 1993 Adam Glass * 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 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 */ #ifndef MACHINE /* * Machine dependent constants for the Sun3 series. */ #define MACHINE "sun3" #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 3 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) #define NBPG 8192 /* bytes/page */ #define PGOFSET (NBPG-1) /* byte offset into page */ #define PGSHIFT 13 /* LOG2(NBPG) */ #define NBSG 0x20000 /* bytes/segment */ #define SEGOFSET (NBSG-1) /* byte offset into segment */ #define SEGSHIFT 17 /* LOG2(NBSG) */ #define KERNBASE 0x0E000000 /* start of kernel virtual */ #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) #define DEV_BSIZE 512 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define BLKDEV_IOSIZE 2048 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ #define CLSIZE 1 #define CLSIZELOG2 0 /* 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 2 /* pages of u-area */ #define USPACE (UPAGES << PGSHIFT) /* * 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 /* large enough for ether MTU */ #define MCLSHIFT 11 #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") (4096 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) */ \ ((bytes) >> DEV_BSHIFT) #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ ((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)) /* * Mach derived conversion macros */ #define sun3_round_seg(x) ((((unsigned)(x)) + SEGOFSET) & ~SEGOFSET) #define sun3_trunc_seg(x) ((unsigned)(x) & ~SEGOFSET) #define sun3_btos(x) ((unsigned)(x) >> SEGSHIFT) #define sun3_stob(x) ((unsigned)(x) << SEGSHIFT) #define sun3_round_page(x) ((((unsigned)(x)) + PGOFSET) & ~PGOFSET) #define sun3_trunc_page(x) ((unsigned)(x) & ~PGOFSET) #define sun3_btop(x) ((unsigned)(x) >> PGSHIFT) #define sun3_ptob(x) ((unsigned)(x) << PGSHIFT) /* * Suns have a REAL interrupt register, so spl0() and splx(s) * have no need to check for any simulated interrupts, etc. * All are done in-line (if optimization turned on). */ #include #ifdef __GNUC__ /* * This is as close to a macro as one can get. * (See the GCC extensions info document.) */ extern __inline__ int _spl(int new) { register int old; __asm__ __volatile ("clrl %0; movw sr,%0; movw %1,sr" : "&=d" (old) : "di" (new)); return (old); } #endif /* GNUC */ #define spl0() _spl(PSL_S|PSL_IPL0) #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 splx(x) _spl(x) #define splsoftclock() spl1() #define splnet() spl3() #define splbio() spl2() #define splimp() spl3() #define spltty() spl2() #define splzs() spl6() #define splclock() spl5() #define splstatclock() splclock() #define splvm() splimp() #define splhigh() spl7() #define splsched() spl7() #ifdef KERNEL #ifndef LOCORE #define DELAY(n) delay(n) #endif #else #define DELAY(n) { register int N = (n); while (--N > 0); } #endif #endif /* MACHINE */