1*b1b36fc1Ssimonb /* $NetBSD: param.h,v 1.26 2021/05/31 14:38:55 simonb Exp $ */ 2aad01611Sagc 3aad01611Sagc /*- 4f0d2889eSwiz * Copyright (c) 2002 The NetBSD Foundation, Inc. All rights reserved. 5aad01611Sagc * Copyright (c) 1990 The Regents of the University of California. 6aad01611Sagc * All rights reserved. 7aad01611Sagc * 8aad01611Sagc * This code is derived from software contributed to Berkeley by 9aad01611Sagc * William Jolitz. 10aad01611Sagc * 11aad01611Sagc * Redistribution and use in source and binary forms, with or without 12aad01611Sagc * modification, are permitted provided that the following conditions 13aad01611Sagc * are met: 14aad01611Sagc * 1. Redistributions of source code must retain the above copyright 15aad01611Sagc * notice, this list of conditions and the following disclaimer. 16aad01611Sagc * 2. Redistributions in binary form must reproduce the above copyright 17aad01611Sagc * notice, this list of conditions and the following disclaimer in the 18aad01611Sagc * documentation and/or other materials provided with the distribution. 19aad01611Sagc * 3. Neither the name of the University nor the names of its contributors 20aad01611Sagc * may be used to endorse or promote products derived from this software 21aad01611Sagc * without specific prior written permission. 22aad01611Sagc * 23aad01611Sagc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24aad01611Sagc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25aad01611Sagc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26aad01611Sagc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27aad01611Sagc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28aad01611Sagc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29aad01611Sagc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30aad01611Sagc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31aad01611Sagc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32aad01611Sagc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33aad01611Sagc * SUCH DAMAGE. 34aad01611Sagc * 35aad01611Sagc * @(#)param.h 5.8 (Berkeley) 6/28/91 36aad01611Sagc */ 3765363da2Sitojun 3865363da2Sitojun /* 39f9201a16Such * SuperH dependent constants. 4065363da2Sitojun */ 4165363da2Sitojun 425cf2727aSuch #ifndef _SH3_PARAM_H_ 435cf2727aSuch #define _SH3_PARAM_H_ 445cf2727aSuch 45f9201a16Such #if defined(_KERNEL) && !defined(_LOCORE) 461c1e708cSpooka #include <machine/cpu.h> 4765363da2Sitojun #endif 48*b1b36fc1Ssimonb #ifdef _KERNEL_OPT 49*b1b36fc1Ssimonb #include "opt_param.h" 50*b1b36fc1Ssimonb #endif 5165363da2Sitojun 525cf2727aSuch /* NetBSD/sh3 is 4KB page */ 535cf2727aSuch #define PGSHIFT 12 545cf2727aSuch #define NBPG (1 << PGSHIFT) 555cf2727aSuch #define PGOFSET (NBPG - 1) 565cf2727aSuch 57f9201a16Such /* 58f9201a16Such * u-space. 59f9201a16Such */ 604c6260b9Such #define UPAGES 3 /* pages of u-area */ 6165363da2Sitojun #define USPACE (UPAGES * NBPG) /* total size of u-area */ 624c6260b9Such #if UPAGES == 1 634c6260b9Such #error "too small u-area" 644c6260b9Such #elif UPAGES == 2 654c6260b9Such #define P1_STACK /* kernel stack is P1-area */ 664c6260b9Such #else 674c6260b9Such #undef P1_STACK /* kernel stack is P3-area */ 684c6260b9Such #endif 6965363da2Sitojun 7065363da2Sitojun #ifndef MSGBUFSIZE 7165363da2Sitojun #define MSGBUFSIZE NBPG /* default message buffer size */ 7265363da2Sitojun #endif 7365363da2Sitojun 7465363da2Sitojun /* 7565363da2Sitojun * Constants related to network buffer management. 7605132683Sragge * MCLBYTES must be no larger than NBPG (the software page size), and, 7765363da2Sitojun * on machines that exchange pages of input or output buffers with mbuf 7865363da2Sitojun * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 7965363da2Sitojun * of the hardware page size. 8065363da2Sitojun */ 81d738f90fSitojun #define MSIZE 256 /* size of an mbuf */ 8265363da2Sitojun 8365363da2Sitojun #ifndef MCLSHIFT 8465363da2Sitojun #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 85d9ab16baSsimonb /* 2K cluster can hold Ether frame */ 8665363da2Sitojun #endif /* MCLSHIFT */ 8765363da2Sitojun 8865363da2Sitojun #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 8965363da2Sitojun 9065363da2Sitojun /* 91dded044fSthorpej * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 92dded044fSthorpej * logical pages. 9365363da2Sitojun */ 944c23b30cSpara #define NKMEMPAGES_MIN_DEFAULT ((16 * 1024 * 1024) >> PAGE_SHIFT) 954c23b30cSpara #define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT) 9665363da2Sitojun 9723a77a73Sisaki /* Default audio blocksize in msec. See sys/dev/audio/audio.c */ 9823a77a73Sisaki #if defined(_KERNEL) 9923a77a73Sisaki #define __AUDIO_BLK_MS (40) 10023a77a73Sisaki #endif 10123a77a73Sisaki 1025cf2727aSuch #endif /* !_SH3_PARAM_H_ */ 103