/* $OpenBSD: param.h,v 1.11 1998/08/30 22:05:35 millert Exp $ */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1992, 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 and Ralph Campbell. * * 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 1.11 89/08/14 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 */ #ifndef _MIPS_PARAM_H_ #define _MIPS_PARAM_H_ #ifdef _KERNEL #ifdef _LOCORE #include #else #include #endif #endif #define MACHINE_ARCH "mips" #define _MACHINE_ARCH mips #define MID_MACHINE 0 /* None but has to be defined */ /* * 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 7 #define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ ALIGNBYTES) #define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof (t) - 1)) == 0) #define NBPG 4096 /* bytes/page */ #define PGOFSET (NBPG-1) /* byte offset into page */ #define PGSHIFT 12 /* LOG2(NBPG) */ #define NPTEPG (NBPG/4) #define NBSEG 0x400000 /* bytes/segment */ #define SEGOFSET (NBSEG-1) /* byte offset into segment */ #define SEGSHIFT 22 /* LOG2(NBSEG) */ #define KERNBASE 0x80000000 /* 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 /* XXX Maxphys temporary changed to 32K while SCSI driver is fixed. */ #define MAXPHYS (32 * 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 */ #if defined(_LOCORE) && defined(notyet) #define UADDR 0xffffffffffffc000 /* address of u */ #else #define UADDR 0xffffc000 /* address of u */ #endif #define USPACE (UPAGES*NBPG) /* size of u-area in bytes */ #define UVPN (UADDR>>PGSHIFT)/* virtual page number of u */ #define KERNELSTACK (UADDR+UPAGES*NBPG) /* top of kernel stack */ /* * 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) /* enough for whole Ethernet packet */ #define MCLOFSET (MCLBYTES - 1) #ifdef PMON #define NMBCLUSTERS 256 /* map size, max cluster allocation */ #endif #ifndef NMBCLUSTERS #ifdef GATEWAY #define NMBCLUSTERS 2048 /* map size, max cluster allocation */ #else #define NMBCLUSTERS 1024 /* map size, max cluster allocation */ #endif #endif #define MSGBUFSIZE 8192 /* * Size of kernel malloc arena in CLBYTES-sized logical pages */ #ifndef NKMEMCLUSTERS #ifdef PMON #define NKMEMCLUSTERS (512 * 1024 / CLBYTES) /* 0.5Mb */ #else #define NKMEMCLUSTERS (128 * 1024 * 1024 / CLBYTES) #endif #endif /* pages ("clicks") (4096 bytes) 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 btodb(x) ((x) >> DEV_BSHIFT) #define dbtob(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)) /* * Conversion macros */ #define mips_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) #define mips_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) #define mips_btop(x) ((unsigned)(x) >> PGSHIFT) #define mips_ptob(x) ((unsigned)(x) << PGSHIFT) #ifdef _KERNEL #ifndef _LOCORE #define DELAY(n) delay(n) void delay __P((int)); void nanodelay __P((int)); #endif #else /* !_KERNEL */ #define DELAY(n) { register int N = (n); while (--N > 0); } void delay __P((int)); #endif /* !_KERNEL */ #endif /* !_MIPS_PARAM_H_ */