1 /* $NetBSD: param.h,v 1.16 2021/05/31 14:38:57 simonb Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _AARCH64_PARAM_H_ 33 #define _AARCH64_PARAM_H_ 34 35 #ifdef __aarch64__ 36 37 #ifdef _KERNEL_OPT 38 #include "opt_cputypes.h" 39 #include "opt_param.h" 40 #endif 41 42 /* 43 * Machine dependent constants for all ARM processors 44 */ 45 46 /* 47 * For KERNEL code: 48 * MACHINE must be defined by the individual port. This is so that 49 * uname returns the correct thing, etc. 50 * 51 * MACHINE_ARCH may be defined by individual ports as a temporary 52 * measure while we're finishing the conversion to ELF. 53 * 54 * For non-KERNEL code: 55 * If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb". 56 */ 57 58 #if defined(_KERNEL) 59 # ifndef MACHINE_ARCH /* XXX For now */ 60 # ifdef __AARCH64EB__ 61 # define _MACHINE_ARCH aarch64eb 62 # define MACHINE_ARCH "aarch64eb" 63 # define _MACHINE32_ARCH earmv7hfeb 64 # define MACHINE32_ARCH "earmv7hfeb" 65 # else 66 # define _MACHINE_ARCH aarch64 67 # define MACHINE_ARCH "aarch64" 68 # define _MACHINE32_ARCH earmv7hf 69 # define MACHINE32_ARCH "earmv7hf" 70 # endif /* __AARCH64EB__ */ 71 # endif /* MACHINE_ARCH */ 72 #else 73 # undef _MACHINE 74 # undef MACHINE 75 # undef _MACHINE_ARCH 76 # undef MACHINE_ARCH 77 # undef _MACHINE32_ARCH 78 # undef MACHINE32_ARCH 79 # define _MACHINE aarch64 80 # define MACHINE "aarch64" 81 # ifdef __AARCH64EB__ 82 # define _MACHINE_ARCH aarch64eb 83 # define MACHINE_ARCH "aarch64eb" 84 # define _MACHINE32_ARCH earmv7hfeb 85 # define MACHINE32_ARCH "earmv7hfeb" 86 # else 87 # define _MACHINE_ARCH aarch64 88 # define MACHINE_ARCH "aarch64" 89 # define _MACHINE32_ARCH earmv7hf 90 # define MACHINE32_ARCH "earmv7hf" 91 # endif /* __AARCH64EB__ */ 92 #endif /* !_KERNEL */ 93 94 #define MID_MACHINE MID_AARCH64 95 96 /* AARCH64-specific macro to align a stack pointer (downwards). */ 97 #define STACK_ALIGNBYTES (16 - 1) 98 99 #define ALIGNBYTES32 (8 - 1) 100 #define ALIGN32(p) \ 101 (((uintptr_t)(p) + ALIGNBYTES32) & ~ALIGNBYTES32) 102 103 #define NKMEMPAGES_MIN_DEFAULT ((128UL * 1024 * 1024) >> PAGE_SHIFT) 104 #define NKMEMPAGES_MAX_UNLIMITED 1 105 106 #ifdef AARCH64_PAGE_SHIFT 107 #if (1 << AARCH64_PAGE_SHIFT) & ~0x141000 108 #error AARCH64_PAGE_SHIFT contains an unsupported value. 109 #endif 110 #define PGSHIFT AARCH64_PAGE_SHIFT 111 #else 112 #define PGSHIFT 12 113 #endif 114 #define NBPG (1 << PGSHIFT) 115 #define PGOFSET (NBPG - 1) 116 117 /* 118 * Constants related to network buffer management. 119 * MCLBYTES must be no larger than NBPG (the software page size), and 120 * NBPG % MCLBYTES must be zero. 121 */ 122 #if PGSHIFT > 12 123 #define MSIZE 256 /* size of an mbuf */ 124 #else 125 #define MSIZE 512 /* size of an mbuf */ 126 #endif 127 128 #ifndef MCLSHIFT 129 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 130 /* 2K cluster can hold Ether frame */ 131 #endif /* MCLSHIFT */ 132 133 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 134 135 #ifndef NFS_RSIZE 136 #define NFS_RSIZE 32768 /* Default NFS read data size */ 137 #endif 138 #ifndef NFS_WSIZE 139 #define NFS_WSIZE 32768 /* Default NFS write data size */ 140 #endif 141 142 #ifndef MSGBUFSIZE 143 #define MSGBUFSIZE 65536 /* default message buffer size */ 144 #endif 145 146 #define COHERENCY_UNIT 128 147 #define CACHE_LINE_SIZE 128 148 149 #define MAXCPUS 256 150 151 #ifdef _KERNEL 152 153 #ifndef __HIDE_DELAY 154 void delay(unsigned int); 155 #define DELAY(x) delay(x) 156 #endif 157 /* 158 * Compatibility /dev/zero mapping. 159 */ 160 #ifdef COMPAT_16 161 #define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM)) 162 #endif 163 164 #endif /* _KERNEL */ 165 166 #define aarch64_btop(x) ((unsigned long)(x) >> PGSHIFT) 167 #define aarch64_ptob(x) ((unsigned long)(x) << PGSHIFT) 168 #define aarch64_trunc_page(x) ((unsigned long)(x) & ~PGSHIFT) 169 #define aarch64_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET) 170 171 /* compatibility for arm */ 172 #define arm_btop(x) aarch64_btop(x) 173 #define arm_ptob(x) aarch64_ptob(x) 174 175 #elif defined(__arm__) 176 177 #include <arm/param.h> 178 179 #endif /* __aarch64__/__arm__ */ 180 181 #endif /* _AARCH64_PARAM_H_ */ 182
Indexes created Mon Sep 22 05:09:51 GMT 2025