1 /* $NetBSD: param.h,v 1.12 2023/10/06 11:45:37 skrll 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 #ifdef _KERNEL_OPT 41 #include "opt_param.h" 42 #endif 43 44 /* 45 * Machine dependent constants for Intel Itanium. 46 */ 47 48 #ifdef _KERNEL 49 #include <machine/cpu.h> 50 #endif 51 52 #define _MACHINE ia64 53 #define MACHINE "ia64" 54 #define _MACHINE_ARCH ia64 55 #define MACHINE_ARCH "ia64" 56 #define MID_MACHINE MID_IA64 57 58 #ifdef MULTIPROCESSOR 59 #define MAXCPU 16 60 #else 61 #define MAXCPU 1 62 #endif 63 64 #define UPAGES 4 65 #define USPACE (UPAGES * NBPG) /* total size of u-area */ 66 67 #ifndef MSGBUFSIZE 68 #define MSGBUFSIZE NBPG /* default message buffer size */ 69 #endif 70 71 #ifndef KSTACK_PAGES 72 #define KSTACK_PAGES 4 /* pages of kernel stack */ 73 #endif 74 #define KSTACK_GUARD_PAGES 0 /* pages of kstack guard; 0 disables */ 75 76 #define ALIGNBYTES32 (sizeof(int) - 1) 77 #define ALIGN32(p) (((u_long)(p) + ALIGNBYTES32) &~ALIGNBYTES32) 78 79 #ifndef LOG2_PAGE_SIZE 80 #define LOG2_PAGE_SIZE 14 /* 16K pages by default. */ 81 #endif 82 #define PGSHIFT 14 /* LOG2(NBPG) */ 83 #define NBPG (1 << PGSHIFT) /* bytes/page */ 84 #define PGOFSET (NBPG-1) /* byte offset into page */ 85 #define NPTEPG (NBPG/(sizeof (pt_entry_t))) 86 /* 87 * Constants related to network buffer management. 88 * MCLBYTES must be no larger than NBPG (the software page size), and, 89 * on machines that exchange pages of input or output buffers with mbuf 90 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 91 * of the hardware page size. 92 */ 93 #define MSIZE 256 /* size of an mbuf */ 94 95 #ifndef MCLSHIFT 96 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 97 /* 2K cluster can hold Ether frame */ 98 #endif /* MCLSHIFT */ 99 100 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 101 102 /* 103 * Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized 104 * logical pages. 105 * No enforced maxmimum an ia64 106 */ 107 #define NKMEMPAGES_MIN_DEFAULT ((32 * 1024 * 1024) >> PAGE_SHIFT) 108 #define NKMEMPAGES_MAX_UNLIMITED 1 109 110 /* The default size of identity mappings in region 6 & 7. */ 111 #ifndef LOG2_ID_PAGE_SIZE 112 #define LOG2_ID_PAGE_SIZE 16 113 #endif 114 115 /* 116 * Mach derived conversion macros 117 */ 118 119 #define ia64_round_page(x) ((((unsigned long)(x)) + NBPG - 1) & ~(NBPG - 1)) 120 #define ia64_trunc_page(x) ((unsigned long)(x) & ~(NBPG - 1)) 121 122 #define ia64_btop(x) ((unsigned long)(x) >> PGSHIFT) 123 #define ia64_ptob(x) ((unsigned long)(x) << PGSHIFT) 124 125 #ifdef _KERNEL 126 #ifndef _LOCORE 127 128 #include <machine/intr.h> 129 130 static __inline void delay(unsigned int us) {} /* XXXXX */ 131 132 #endif /* _LOCORE */ 133 #endif /* _KERNEL */ 134 135 #endif /* _IA64_PARAM_H_ */ 136