1 /* $NetBSD: param.h,v 1.9 2017/04/08 18:03:33 scole 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 #ifndef LOG2_PAGE_SIZE 84 #define LOG2_PAGE_SIZE 14 /* 16K pages by default. */ 85 #endif 86 #define PGSHIFT 14 /* LOG2(NBPG) */ 87 #define NBPG (1 << PGSHIFT) /* bytes/page */ 88 #define PGOFSET (NBPG-1) /* byte offset into page */ 89 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 90 /* 91 * Constants related to network buffer management. 92 * MCLBYTES must be no larger than NBPG (the software page size), and, 93 * on machines that exchange pages of input or output buffers with mbuf 94 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 95 * of the hardware page size. 96 */ 97 #define MSIZE 256 /* size of an mbuf */ 98 99 #ifndef MCLSHIFT 100 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 101 /* 2K cluster can hold Ether frame */ 102 #endif /* MCLSHIFT */ 103 104 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 105 106 /* 107 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 108 * logical pages. 109 * No enforced maxmimum an ia64 110 */ 111 #define NKMEMPAGES_MIN_DEFAULT ((32 * 1024 * 1024) >> PAGE_SHIFT) 112 #define NKMEMPAGES_MAX_UNLIMITED 1 113 114 /* The default size of identity mappings in region 6 & 7. */ 115 #ifndef LOG2_ID_PAGE_SIZE 116 #define LOG2_ID_PAGE_SIZE 16 117 #endif 118 119 /* 120 * Mach derived conversion macros 121 */ 122 123 #define ia64_round_page(x) ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG - 1)) 124 #define ia64_trunc_page(x) ((unsigned long)(x) & ~(NBPG - 1)) 125 126 #define ia64_btop(x) ((unsigned long)(x) >> PGSHIFT) 127 #define ia64_ptob(x) ((unsigned long)(x) << PGSHIFT) 128 129 #ifdef _KERNEL 130 #ifndef _LOCORE 131 132 #include <machine/intr.h> 133 134 static __inline void delay(unsigned int us) {} /* XXXXX */ 135 136 #endif /* _LOCORE */ 137 #endif /* _KERNEL */ 138 139 #endif /* _IA64_PARAM_H_ */ 140