1 /* $NetBSD: param.h,v 1.8 2012/02/10 17:35:49 para Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)param.h 5.8 (Berkeley) 6/28/91 35 */ 36 37 #ifndef _IA64_PARAM_H_ 38 #define _IA64_PARAM_H_ 39 40 /* 41 * Machine dependent constants for Intel Itanium. 42 */ 43 44 #ifdef _KERNEL 45 #include <machine/cpu.h> 46 #endif 47 48 #define _MACHINE ia64 49 #define MACHINE "ia64" 50 #define _MACHINE_ARCH ia64 51 #define MACHINE_ARCH "ia64" 52 #define MID_MACHINE MID_IA64 53 54 #ifdef MULTIPROCESSOR 55 #define MAXCPU 16 56 #else 57 #define MAXCPU 1 58 #endif 59 60 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 61 #define DEV_BSIZE (1<<DEV_BSHIFT) 62 #define BLKDEV_IOSIZE 2048 63 64 #ifndef MAXPHYS 65 #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ 66 #endif 67 68 #define UPAGES 4 69 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 70 71 #ifndef MSGBUFSIZE 72 #define MSGBUFSIZE NBPG /* default message buffer size */ 73 #endif 74 75 #ifndef KSTACK_PAGES 76 #define KSTACK_PAGES 4 /* pages of kernel stack */ 77 #endif 78 #define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */ 79 80 #define ALIGNBYTES32 (sizeof(int) - 1) 81 #define ALIGN32(p) (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32) 82 83 #define PGSHIFT 14 /* LOG2(NBPG) */ 84 #define NBPG (1 << PGSHIFT) /* bytes/page */ 85 #define PGOFSET (NBPG-1) /* byte offset into page */ 86 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 87 /* 88 * Constants related to network buffer management. 89 * MCLBYTES must be no larger than NBPG (the software page size), and, 90 * on machines that exchange pages of input or output buffers with mbuf 91 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 92 * of the hardware page size. 93 */ 94 #define MSIZE 256 /* size of an mbuf */ 95 96 #ifndef MCLSHIFT 97 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 98 /* 2K cluster can hold Ether frame */ 99 #endif /* MCLSHIFT */ 100 101 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 102 103 /* 104 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 105 * logical pages. 106 * No enforced maxmimum an ia64 107 */ 108 #define NKMEMPAGES_MIN_DEFAULT ((32 * 1024 * 1024) >> PAGE_SHIFT) 109 #define NKMEMPAGES_MAX_UNLIMITED 1 110 111 /* 112 * Mach derived conversion macros 113 */ 114 115 #define ia64_round_page(x) ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG - 1)) 116 #define ia64_trunc_page(x) ((unsigned long)(x) & ~(NBPG - 1)) 117 118 #define ia64_btop(x) ((unsigned long)(x) >> PGSHIFT) 119 #define ia64_ptob(x) ((unsigned long)(x) << PGSHIFT) 120 121 #ifdef _KERNEL 122 #ifndef _LOCORE 123 124 #include <machine/intr.h> 125 126 static __inline void delay(unsigned int us) {} /* XXXXX */ 127 128 #endif /* _LOCORE */ 129 #endif /* _KERNEL */ 130 131 #endif /* _IA64_PARAM_H_ */ 132