/* $NetBSD: param.h,v 1.24.4.1 2020/05/18 18:12:25 martin Exp $ */ /*- * Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved. * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * 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. 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. * * @(#)param.h 5.8 (Berkeley) 6/28/91 */ /* * SuperH dependent constants. */ #ifndef _SH3_PARAM_H_ #define _SH3_PARAM_H_ #if defined(_KERNEL) && !defined(_LOCORE) #include <machine/cpu.h> #endif /* NetBSD/sh3 is 4KB page */ #define PGSHIFT 12 #define NBPG (1 << PGSHIFT) #define PGOFSET (NBPG - 1) /* * u-space. */ #define UPAGES 3 /* pages of u-area */ #define USPACE (UPAGES * NBPG) /* total size of u-area */ #if UPAGES == 1 #error "too small u-area" #elif UPAGES == 2 #define P1_STACK /* kernel stack is P1-area */ #else #undef P1_STACK /* kernel stack is P3-area */ #endif #ifndef MSGBUFSIZE #define MSGBUFSIZE NBPG /* default message buffer size */ #endif /* * Constants related to network buffer management. * MCLBYTES must be no larger than NBPG (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 256 /* size of an mbuf */ #ifndef MCLSHIFT #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ /* 2K cluster can hold Ether frame */ #endif /* MCLSHIFT */ #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ /* * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized * logical pages. */ #define NKMEMPAGES_MIN_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT) #define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) /* Default audio blocksize in msec. See sys/dev/audio/audio.c */ #if defined(_KERNEL) #define __AUDIO_BLK_MS (40) #endif #endif /* !_SH3_PARAM_H_ */ |