1 /* $NetBSD: param.h,v 1.27 2011/02/08 20:20:09 rmind Exp $ */ 2 /* $OpenBSD: param.h,v 1.9 1997/04/30 09:54:15 niklas Exp $ */ 3 4 /* 5 * Copyright (c) 1988 University of Utah. 6 * Copyright (c) 1992, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * the Systems Programming Group of the University of Utah Computer 11 * Science Department and Ralph Campbell. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * from: Utah Hdr: machparam.h 1.11 89/08/14 38 * from: @(#)param.h 8.1 (Berkeley) 6/10/93 39 */ 40 41 #ifndef _ARC_PARAM_H_ 42 #define _ARC_PARAM_H_ 43 44 /* 45 * Machine-dependent constants (VM, etc) common across MIPS cpus 46 */ 47 #include <mips/mips_param.h> 48 49 /* 50 * Machine dependent constants for ARC BIOS MIPS machines: 51 * Acer Labs PICA_61 52 * Deskstation rPC44 53 * Deskstation Tyne 54 * Etc 55 */ 56 #define _MACHINE_ARCH mipsel 57 #define MACHINE_ARCH "mipsel" 58 #define _MACHINE arc 59 #define MACHINE "arc" 60 61 #define KERNBASE 0x80000000 /* start of kernel virtual */ 62 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 63 64 #define DEV_BSIZE 512 65 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 66 #define BLKDEV_IOSIZE 2048 67 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 68 69 #define SSIZE 1 /* initial stack size/NBPG */ 70 #define SINCR 1 /* increment of stack/NBPG */ 71 72 #define UPAGES 2 /* pages of u-area */ 73 #if defined(_LOCORE) && defined(notyet) 74 #define UADDR 0xffffffffffffc000 /* address of u */ 75 #else 76 #define UADDR 0xffffc000 /* address of u */ 77 #endif 78 #define USPACE (UPAGES*NBPG) /* size of u-area in bytes */ 79 #define UVPN (UADDR>>PGSHIFT)/* virtual page number of u */ 80 #define KERNELSTACK (UADDR+UPAGES*NBPG) /* top of kernel stack */ 81 82 /* 83 * Constants related to network buffer management. 84 * MCLBYTES must be no larger than NBPG (the software page size), and, 85 * on machines that exchange pages of input or output buffers with mbuf 86 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 87 * of the hardware page size. 88 */ 89 #define MSIZE 256 /* size of an mbuf */ 90 91 #ifndef MCLSHIFT 92 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 93 /* 2K cluster can hold Ether frame */ 94 #endif /* MCLSHIFT */ 95 96 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 97 98 /* bytes to disk blocks */ 99 #define btodb(x) ((x) >> DEV_BSHIFT) 100 #define dbtob(x) ((x) << DEV_BSHIFT) 101 102 #ifdef _KERNEL 103 #ifndef _LOCORE 104 105 extern int cpuspeed; 106 void delay(unsigned int n); 107 108 #define DELAY(n) delay(n) 109 110 #include <machine/intr.h> 111 112 #endif /* _LOCORE */ 113 #endif /* _KERNEL */ 114 115 #endif /* _ARC_PARAM_H_ */ 116