1 /* $NetBSD: param.h,v 1.14 2020/02/01 09:21:49 skrll 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 #endif 40 41 /* 42 * Machine dependent constants for all ARM processors 43 */ 44 45 /* 46 * For KERNEL code: 47 * MACHINE must be defined by the individual port. This is so that 48 * uname returns the correct thing, etc. 49 * 50 * MACHINE_ARCH may be defined by individual ports as a temporary 51 * measure while we're finishing the conversion to ELF. 52 * 53 * For non-KERNEL code: 54 * If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb". 55 */ 56 57 #if defined(_KERNEL) 58 # ifndef MACHINE_ARCH /* XXX For now */ 59 # ifdef __AARCH64EB__ 60 # define _MACHINE_ARCH aarch64eb 61 # define MACHINE_ARCH "aarch64eb" 62 # define _MACHINE32_ARCH earmv7hfeb 63 # define MACHINE32_ARCH "earmv7hfeb" 64 # else 65 # define _MACHINE_ARCH aarch64 66 # define MACHINE_ARCH "aarch64" 67 # define _MACHINE32_ARCH earmv7hf 68 # define MACHINE32_ARCH "earmv7hf" 69 # endif /* __AARCH64EB__ */ 70 # endif /* MACHINE_ARCH */ 71 #else 72 # undef _MACHINE 73 # undef MACHINE 74 # undef _MACHINE_ARCH 75 # undef MACHINE_ARCH 76 # undef _MACHINE32_ARCH 77 # undef MACHINE32_ARCH 78 # define _MACHINE aarch64 79 # define MACHINE "aarch64" 80 # ifdef __AARCH64EB__ 81 # define _MACHINE_ARCH aarch64eb 82 # define MACHINE_ARCH "aarch64eb" 83 # define _MACHINE32_ARCH earmv7hfeb 84 # define MACHINE32_ARCH "earmv7hfeb" 85 # else 86 # define _MACHINE_ARCH aarch64 87 # define MACHINE_ARCH "aarch64" 88 # define _MACHINE32_ARCH earmv7hf 89 # define MACHINE32_ARCH "earmv7hf" 90 # endif /* __AARCH64EB__ */ 91 #endif /* !_KERNEL */ 92 93 #define MID_MACHINE MID_AARCH64 94 95 /* AARCH64-specific macro to align a stack pointer (downwards). */ 96 #define STACK_ALIGNBYTES (16 - 1) 97 98 #define ALIGNBYTES32 (8 - 1) 99 #define ALIGN32(p) \ 100 (((uintptr_t)(p) + ALIGNBYTES32) & ~ALIGNBYTES32) 101 102 #define NKMEMPAGES_MIN_DEFAULT ((128UL * 1024 * 1024) >> PAGE_SHIFT) 103 #define NKMEMPAGES_MAX_UNLIMITED 1 104 105 #ifdef AARCH64_PAGE_SHIFT 106 #if (1 << AARCH64_PAGE_SHIFT) & ~0x141000 107 #error AARCH64_PAGE_SHIFT contains an unsupported value. 108 #endif 109 #define PGSHIFT AARCH64_PAGE_SHIFT 110 #else 111 #define PGSHIFT 12 112 #endif 113 #define NBPG (1 << PGSHIFT) 114 #define PGOFSET (NBPG - 1) 115 116 /* 117 * Constants related to network buffer management. 118 * MCLBYTES must be no larger than NBPG (the software page size), and 119 * NBPG % MCLBYTES must be zero. 120 */ 121 #if PGSHIFT > 12 122 #define MSIZE 256 /* size of an mbuf */ 123 #else 124 #define MSIZE 512 /* size of an mbuf */ 125 #endif 126 127 #ifndef MCLSHIFT 128 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 129 /* 2K cluster can hold Ether frame */ 130 #endif /* MCLSHIFT */ 131 132 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 133 134 135 #ifndef MSGBUFSIZE 136 #define MSGBUFSIZE 65536 /* default message buffer size */ 137 #endif 138 139 #define COHERENCY_UNIT 128 140 #define CACHE_LINE_SIZE 128 141 142 #define MAXCPUS 256 143 144 #ifdef _KERNEL 145 146 #ifndef __HIDE_DELAY 147 void delay(unsigned int); 148 #define DELAY(x) delay(x) 149 #endif 150 /* 151 * Compatibility /dev/zero mapping. 152 */ 153 #ifdef COMPAT_16 154 #define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM)) 155 #endif 156 157 #endif /* _KERNEL */ 158 159 #define aarch64_btop(x) ((unsigned long)(x) >> PGSHIFT) 160 #define aarch64_ptob(x) ((unsigned long)(x) << PGSHIFT) 161 #define aarch64_trunc_page(x) ((unsigned long)(x) & ~PGSHIFT) 162 #define aarch64_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET) 163 164 /* compatibility for arm */ 165 #define arm_btop(x) aarch64_btop(x) 166 #define arm_ptob(x) aarch64_ptob(x) 167 168 #elif defined(__arm__) 169 170 #include <arm/param.h> 171 172 #endif /* __aarch64__/__arm__ */ 173 174 #endif /* _AARCH64_PARAM_H_ */ 175