1 /* $NetBSD: param.h,v 1.30 2016/07/13 00:04:28 maya 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 #define _MACHINE arc 48 #define MACHINE "arc" 49 50 #include <mips/mips_param.h> 51 52 /* 53 * Machine dependent constants for ARC BIOS MIPS machines: 54 * Acer Labs PICA_61 55 * Deskstation rPC44 56 * Deskstation Tyne 57 * Etc 58 */ 59 #define KERNBASE 0x80000000 /* start of kernel virtual */ 60 #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) 61 62 #define DEV_BSIZE 512 63 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 64 #define BLKDEV_IOSIZE 2048 65 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 66 67 #define SSIZE 1 /* initial stack size/NBPG */ 68 #define SINCR 1 /* increment of stack/NBPG */ 69 70 #if defined(_LOCORE) && defined(notyet) 71 #define UADDR 0xffffffffffffc000 /* address of u */ 72 #else 73 #define UADDR 0xffffc000 /* address of u */ 74 #endif 75 #define USPACE (UPAGES*NBPG) /* size of u-area in bytes */ 76 #define UVPN (UADDR>>PGSHIFT)/* virtual page number of u */ 77 #define KERNELSTACK (UADDR+UPAGES*NBPG) /* top of kernel stack */ 78 79 /* 80 * Constants related to network buffer management. 81 * MCLBYTES must be no larger than NBPG (the software page size), and, 82 * on machines that exchange pages of input or output buffers with mbuf 83 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 84 * of the hardware page size. 85 */ 86 #define MSIZE 256 /* size of an mbuf */ 87 88 #ifndef MCLSHIFT 89 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 90 /* 2K cluster can hold Ether frame */ 91 #endif /* MCLSHIFT */ 92 93 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 94 95 /* bytes to disk blocks */ 96 #define btodb(x) ((x) >> DEV_BSHIFT) 97 #define dbtob(x) ((x) << DEV_BSHIFT) 98 99 #ifdef _KERNEL 100 #ifndef _LOCORE 101 102 extern int cpuspeed; 103 void delay(unsigned int n); 104 105 #define DELAY(n) delay(n) 106 107 #include <machine/intr.h> 108 109 #endif /* _LOCORE */ 110 #endif /* _KERNEL */ 111 112 #endif /* _ARC_PARAM_H_ */ 113