1 /* $NetBSD: param.h,v 1.19 2003/08/07 16:26:49 agc Exp $ */ 2 /* $OpenBSD: param.h,v 1.9 1997/04/30 09:54:15 niklas Exp $ */ 3 4 /* 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department and Ralph Campbell. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah Hdr: machparam.h 1.11 89/08/14 37 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 38 */ 39 /* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department and Ralph Campbell. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah Hdr: machparam.h 1.11 89/08/14 75 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 76 */ 77 78 #ifndef _ARC_PARAM_H_ 79 #define _ARC_PARAM_H_ 80 81 /* 82 * Machine-dependent constants (VM, etc) common across MIPS cpus 83 */ 84 #include <mips/mips_param.h> 85 86 /* 87 * Machine dependent constants for ARC BIOS MIPS machines: 88 * Acer Labs PICA_61 89 * Deskstation rPC44 90 * Deskstation Tyne 91 * Etc 92 */ 93 #define _MACHINE_ARCH mipsel 94 #define MACHINE_ARCH "mipsel" 95 #define _MACHINE arc 96 #define MACHINE "arc" 97 #define MID_MACHINE MID_PMAX /* XXX Bogus, but needed for now... */ 98 99 #define KERNBASE 0x80000000 /* start of kernel virtual */ 100 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 101 102 #define DEV_BSIZE 512 103 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 104 #define BLKDEV_IOSIZE 2048 105 /* XXX Maxphys temporary changed to 32K while SCSI driver is fixed. */ 106 #define MAXPHYS (32 * 1024) /* max raw I/O transfer size */ 107 108 #define SSIZE 1 /* initial stack size/NBPG */ 109 #define SINCR 1 /* increment of stack/NBPG */ 110 111 #define UPAGES 2 /* pages of u-area */ 112 #if defined(_LOCORE) && defined(notyet) 113 #define UADDR 0xffffffffffffc000 /* address of u */ 114 #else 115 #define UADDR 0xffffc000 /* address of u */ 116 #endif 117 #define USPACE (UPAGES*NBPG) /* size of u-area in bytes */ 118 #define UVPN (UADDR>>PGSHIFT)/* virtual page number of u */ 119 #define KERNELSTACK (UADDR+UPAGES*NBPG) /* top of kernel stack */ 120 121 /* 122 * Constants related to network buffer management. 123 * MCLBYTES must be no larger than NBPG (the software page size), and, 124 * on machines that exchange pages of input or output buffers with mbuf 125 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 126 * of the hardware page size. 127 */ 128 #define MSIZE 256 /* size of an mbuf */ 129 130 #ifndef MCLSHIFT 131 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 132 /* 2K cluster can hold Ether frame */ 133 #endif /* MCLSHIFT */ 134 135 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 136 137 #ifndef NMBCLUSTERS 138 #if defined(_KERNEL_OPT) 139 #include "opt_gateway.h" 140 #endif 141 142 #ifdef GATEWAY 143 #define NMBCLUSTERS 2048 /* map size, max cluster allocation */ 144 #else 145 #define NMBCLUSTERS 1024 /* map size, max cluster allocation */ 146 #endif 147 #endif 148 149 /* bytes to disk blocks */ 150 #define btodb(x) ((x) >> DEV_BSHIFT) 151 #define dbtob(x) ((x) << DEV_BSHIFT) 152 153 #ifdef _KERNEL 154 #ifndef _LOCORE 155 156 extern int cpuspeed; 157 extern void delay __P((int n)); 158 159 #if 0 /* XXX: should use mips_mcclock.c */ 160 #define DELAY(n) do { \ 161 int N = cpuspeed * (n); while (--N > 0); \ 162 } while (/*CONSTCOND*/ 0) 163 #else 164 /* 165 * Delay is based on an assumtion that each time in the loop 166 * takes 3 clocks. Three is for branch and subtract in the delay slot. 167 */ 168 #define DELAY(n) do { \ 169 int N = cpuspeed * (n); while ((N -= 3) > 0); \ 170 } while (/*CONSTCOND*/ 0) 171 #endif 172 173 #include <machine/intr.h> 174 175 #endif /* _LOCORE */ 176 #endif /* _KERNEL */ 177 178 #endif /* _ARC_PARAM_H_ */ 179