param.h revision 1.1.28.3
1 /* $NetBSD: param.h,v 1.1.28.3 2018/10/20 06:58:24 pgoyette 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 /* 38 * Machine dependent constants for all ARM processors 39 */ 40 41 /* 42 * For KERNEL code: 43 * MACHINE must be defined by the individual port. This is so that 44 * uname returns the correct thing, etc. 45 * 46 * MACHINE_ARCH may be defined by individual ports as a temporary 47 * measure while we're finishing the conversion to ELF. 48 * 49 * For non-KERNEL code: 50 * If ELF, MACHINE and MACHINE_ARCH are forced to "arm/armeb". 51 */ 52 53 #if defined(_KERNEL) 54 # ifndef MACHINE_ARCH /* XXX For now */ 55 # ifdef __AARCH64EB__ 56 # define _MACHINE_ARCH aarch64eb 57 # define MACHINE_ARCH "aarch64eb" 58 # else 59 # define _MACHINE_ARCH aarch64 60 # define MACHINE_ARCH "aarch64" 61 # endif /* __AARCH64EB__ */ 62 # endif /* MACHINE_ARCH */ 63 #else 64 # undef _MACHINE 65 # undef MACHINE 66 # undef _MACHINE_ARCH 67 # undef MACHINE_ARCH 68 # define _MACHINE aarch64 69 # define MACHINE "aarch64" 70 # ifdef __AARCH64EB__ 71 # define _MACHINE_ARCH aarch64eb 72 # define MACHINE_ARCH "aarch64eb" 73 # else 74 # define _MACHINE_ARCH aarch64 75 # define MACHINE_ARCH "aarch64" 76 # endif /* __AARCH64EB__ */ 77 #endif /* !_KERNEL */ 78 79 #define MID_MACHINE MID_AARCH64 80 81 /* AARCH64-specific macro to align a stack pointer (downwards). */ 82 #define STACK_ALIGNBYTES (16 - 1) 83 84 #define ALIGNBYTES32 (4 - 1) 85 #define ALIGN32(p) \ 86 (((uintptr_t)(p) + ALIGNBYTES32) & ~ALIGNBYTES32) 87 88 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 89 #define DEV_BSIZE (1 << DEV_BSHIFT) 90 #define BLKDEV_IOSIZE 2048 91 92 #ifndef MAXPHYS 93 #define MAXPHYS 65536 /* max I/O transfer size */ 94 #endif 95 96 #define NKMEMPAGES_MAX_DEFAULT ((2048UL * 1024 * 1024) >> PAGE_SHIFT) 97 #define NKMEMPAGES_MIN_DEFAULT ((128UL * 1024 * 1024) >> PAGE_SHIFT) 98 99 #ifdef AARCH64_PAGE_SHIFT 100 #if (1 << AARCH64_PAGE_SHIFT) & ~0x141000 101 #error AARCH64_PAGE_SHIFT contains an unsupported value. 102 #endif 103 #define PGSHIFT AARCH64_PAGE_SHIFT 104 #else 105 #define PGSHIFT 12 106 #endif 107 #define NBPG (1 << PGSHIFT) 108 #define PGOFSET (NBPG - 1) 109 110 /* 111 * Constants related to network buffer management. 112 * MCLBYTES must be no larger than NBPG (the software page size), and 113 * NBPG % MCLBYTES must be zero. 114 */ 115 #if PGSHIFT > 12 116 #define MSIZE 256 /* size of an mbuf */ 117 #else 118 #define MSIZE 512 /* size of an mbuf */ 119 #endif 120 121 #ifndef MCLSHIFT 122 #define MCLSHIFT 11 /* convert bytes to m_buf clusters */ 123 /* 2K cluster can hold Ether frame */ 124 #endif /* MCLSHIFT */ 125 126 #define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */ 127 128 129 #ifndef MSGBUFSIZE 130 #define MSGBUFSIZE 16384 /* default message buffer size */ 131 #endif 132 133 #ifdef _KERNEL 134 void delay(unsigned int); 135 #define DELAY(x) delay(x) 136 #endif 137 /* 138 * Compatibility /dev/zero mapping. 139 */ 140 #ifdef _KERNEL 141 #ifdef COMPAT_16 142 #define COMPAT_ZERODEV(x) (x == makedev(0, _DEV_ZERO_oARM)) 143 #endif 144 #endif /* _KERNEL */ 145 146 #define aarch64_btop(x) ((unsigned long)(x) >> PGSHIFT) 147 #define aarch64_ptob(x) ((unsigned long)(x) << PGSHIFT) 148 #define aarch64_trunc_page(x) ((unsigned long)(x) & ~PGSHIFT) 149 #define aarch64_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET) 150 151 /* compatibility for arm */ 152 #define arm_btop(x) aarch64_btop(x) 153 #define arm_ptob(x) aarch64_ptob(x) 154 #define arm_trunc_page(x) aarch64_trunc_page(x) 155 #define arm_round_page(x) aarch64_round_page(x) 156 157 #elif defined(__arm__) 158 159 #include <arm/param.h> 160 161 #endif /* __aarch64__/__arm__ */ 162 163 #endif /* _AARCH64_PARAM_H_ */ 164
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