/* $NetBSD: param.h,v 1.31 1997/02/24 23:17:38 fvdl Exp $ */ /* * Copyright (c) 1988 University of Utah. * Copyright (c) 1982, 1986, 1990 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 $Hdr: machparam.h 1.11 89/08/14$ * * @(#)param.h 7.8 (Berkeley) 6/28/91 */ #ifndef _MACHINE_PARAM_H_ #define _MACHINE_PARAM_H_ /* * Machine dependent constants for amiga */ #define _MACHINE amiga #define MACHINE "amiga" #define _MACHINE_ARCH m68k #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. * * ALIGNED_POINTER is a boolean macro that checks whether an address * is valid to fetch data elements of type t from on this architecture. * This does not reflect the optimal alignment, just the possibility * (within reasonable limits). * */ #define ALIGNBYTES (sizeof(int) - 1) #define ALIGN(p) (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1)) #define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0) #define NBPG 8192 /* bytes/page */ #define PGOFSET (NBPG-1) /* byte offset into page */ #define PGSHIFT 13 /* LOG2(NBPG) */ #define NPTEPG (NBPG/(sizeof(u_int))) #define NBSEG ((mmutype == MMU_68040) ? 32*NBPG : 2048*NBPG) /* bytes/segment */ #define SEGOFSET (NBSEG-1) /* byte offset into segment */ #define SEGSHIFT 24 /* LOG2(NBSEG) [68030 value] */ #define KERNBASE 0x0 /* 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 * NBPG) /* * 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) #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 (3072*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 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)) /* * Mach derived conversion macros */ #define amiga_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1)) #define amiga_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1)) #define amiga_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) #define amiga_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) #define amiga_btop(x) ((unsigned)(x) >> PGSHIFT) #define amiga_ptob(x) ((unsigned)(x) << PGSHIFT) /* * spl functions; all are normally done in-line */ #include #ifdef _KERNEL /* * point to the custom.intenar and custom.intenaw respectively. */ extern volatile unsigned short *amiga_intena_read, *amiga_intena_write; #ifndef _LOCORE void delay __P((int)); void DELAY __P((int)); #endif #endif #endif /* !_MACHINE_PARAM_H_ */