1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. 23 * Copyright (c) 2015 by Delphix. All rights reserved. 24 * Copyright 2018 Joyent, Inc. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 31 #ifndef _SYS_MACHPARAM_H 32 #define _SYS_MACHPARAM_H 33 34 #ifndef _ASM 35 36 #include <sys/types.h> 37 38 #if defined(__xpv) 39 #include <sys/xpv_impl.h> 40 #endif 41 42 #endif /* !_ASM */ 43 44 #ifdef __cplusplus 45 extern "C" { 46 #endif 47 48 #ifndef _ASM 49 #define ADDRESS_C(c) c ## ul 50 #else /* _ASM */ 51 #define ADDRESS_C(c) (c) 52 #endif /* _ASM */ 53 54 /* 55 * Machine dependent parameters and limits. 56 */ 57 58 /* 59 * If NCPU grows beyond 256, sizing for the x86 comm page will require 60 * adjustment. 61 */ 62 #define NCPU 256 63 #define NCPU_LOG2 8 64 65 /* NCPU_P2 is NCPU rounded to a power of 2 */ 66 #define NCPU_P2 (1 << NCPU_LOG2) 67 68 /* 69 * The value defined below could grow to 16. hat structure and 70 * page_t have room for 16 nodes. 71 */ 72 #define MAXNODES 4 73 74 /* supported page sizes */ 75 #define MMU_PAGE_SIZES 3 76 77 /* 78 * MMU_PAGES* describes the physical page size used by the mapping hardware. 79 * PAGES* describes the logical page size used by the system. 80 */ 81 82 #define MMU_PAGESIZE 0x1000 /* 4096 bytes */ 83 #define MMU_PAGESHIFT 12 /* log2(MMU_PAGESIZE) */ 84 85 #if !defined(_ASM) 86 #define MMU_PAGEOFFSET (MMU_PAGESIZE-1) /* Mask of address bits in page */ 87 #else /* _ASM */ 88 #define MMU_PAGEOFFSET _CONST(MMU_PAGESIZE-1) /* assembler lameness */ 89 #endif /* _ASM */ 90 91 #define MMU_PAGEMASK (~MMU_PAGEOFFSET) 92 93 #define PAGESIZE 0x1000 /* All of the above, for logical */ 94 #define PAGESHIFT 12 95 #define PAGEOFFSET (PAGESIZE - 1) 96 #define PAGEMASK (~PAGEOFFSET) 97 98 /* 99 * DATA_ALIGN is used to define the alignment of the Unix data segment. 100 */ 101 #define DATA_ALIGN PAGESIZE 102 103 /* 104 * DEFAULT KERNEL THREAD stack size (in pages). 105 */ 106 #define DEFAULTSTKSZ_NPGS 5 107 108 #if !defined(_ASM) 109 #define DEFAULTSTKSZ (DEFAULTSTKSZ_NPGS * PAGESIZE) 110 #else /* !_ASM */ 111 #define DEFAULTSTKSZ _MUL(DEFAULTSTKSZ_NPGS, PAGESIZE) /* as(1) lameness */ 112 #endif /* !_ASM */ 113 114 /* 115 * Use a slightly larger thread stack size for interrupt threads rather than 116 * the default. This is useful for cases where the networking stack may do an 117 * rx and a tx in the context of a single interrupt and when combined with 118 * various promisc hooks that need memory, can cause us to get dangerously 119 * close to the edge of the traditional stack sizes. This is only a few pages 120 * more than a traditional stack and given that we don't have that many 121 * interrupt threads, the memory costs end up being more than worthwhile. 122 */ 123 #define LL_INTR_STKSZ_NPGS 8 124 #define LL_INTR_STKSZ (LL_INTR_STKSZ_NPGS * PAGESIZE) 125 126 /* 127 * Virtual address range available to the debugger 128 */ 129 #define SEGDEBUGBASE ADDRESS_C(0xffffffffff800000) 130 #define SEGDEBUGSIZE ADDRESS_C(0x400000) 131 132 #define KERNEL_TEXT UINT64_C(0xfffffffffb800000) 133 134 /* 135 * Reserve pages just below KERNEL_TEXT for the GDT, IDT, LDT, TSS and debug 136 * info. 137 * 138 * For now, DEBUG_INFO_VA must be first in this list for "xm" initiated dumps 139 * of solaris domUs to be usable with mdb. Relying on a fixed VA is not viable 140 * long term, but it's the best we've got for now. 141 */ 142 #if !defined(_ASM) 143 #define DEBUG_INFO_VA (KERNEL_TEXT - MMU_PAGESIZE) 144 #define GDT_VA (DEBUG_INFO_VA - MMU_PAGESIZE) 145 #define IDT_VA (GDT_VA - MMU_PAGESIZE) 146 #define LDT_VA (IDT_VA - (16 * MMU_PAGESIZE)) 147 #define KTSS_VA (LDT_VA - MMU_PAGESIZE) 148 #define DFTSS_VA (KTSS_VA - MMU_PAGESIZE) 149 #define MISC_VA_BASE (DFTSS_VA) 150 #define MISC_VA_SIZE (KERNEL_TEXT - MISC_VA_BASE) 151 #endif /* !_ASM */ 152 153 /* 154 * Base of 'core' heap area, which is used for kernel and module text/data 155 * that must be within a 2GB range to allow for rip-relative addressing. 156 */ 157 #define COREHEAP_BASE ADDRESS_C(0xffffffffc0000000) 158 159 /* 160 * This is valloc_base, above seg_kpm, but below everything else. 161 * A lower value than this may be used if SEGKPM_BASE is adjusted. 162 * See i86pc/os/startup.c 163 */ 164 #define VALLOC_BASE ADDRESS_C(0xfffffe0000000000) 165 166 #define SEGZIOMINSIZE (400L * 1024 * 1024L) /* 400M */ 167 #define SEGVMMMINSIZE (4096L * 1024 * 1024L) /* 4G */ 168 169 #define SEGKPDEFSIZE (2L * 1024L * 1024L * 1024L) /* 2G */ 170 #define SEGKPMAXSIZE (8L * 1024L * 1024L * 1024L) /* 8G */ 171 #define SEGKPMINSIZE (200L * 1024 * 1024L) /* 200M */ 172 173 #define SEGKPM_BASE ADDRESS_C(0xfffffd0000000000) 174 175 /* 176 * KERNELBASE is the virtual address at which the kernel segments start in 177 * all contexts. 178 * 179 * KERNELBASE is not fixed. The value of KERNELBASE can change with 180 * installed memory size. 181 * 182 * common/conf/param.c requires a compile time defined value for KERNELBASE. 183 * This value is save in the variable _kernelbase. _kernelbase may then be 184 * modified with to a different value in i86pc/os/startup.c. 185 * 186 * Most code should be using kernelbase, which resolves to a reference to 187 * _kernelbase. 188 */ 189 #define KERNELBASE ADDRESS_C(0xfffffc8000000000) 190 191 /* 192 * Size of the unmapped "red zone" at the very bottom of the kernel's 193 * address space. Corresponds to 1 slot in the toplevel pagetable. 194 */ 195 #define KERNEL_REDZONE_SIZE ((uintptr_t)1 << 39) 196 197 /* 198 * Define upper limit on user address space 199 * 200 * The upper limit on a 64-bit user address space is 1 large page 201 * (2MB) below kernelbase. The upper limit for a 32-bit user address space 202 * is 1 small page (4KB) below the top of the 32-bit range. The 64-bit 203 * limit give dtrace the red zone it needs below kernelbase. The 32-bit 204 * limit gives us a small red zone to detect address-space overruns in a 205 * user program. 206 * 207 * On the hypervisor, we limit the user to memory below the VA hole. 208 * Subtract 1 large page for a red zone. 209 */ 210 #if defined(__xpv) 211 #define USERLIMIT ADDRESS_C(0x00007fffffe00000) 212 #else 213 #define USERLIMIT ADDRESS_C(0xfffffc7fffe00000) 214 #endif 215 216 #ifdef bug_5074717_is_fixed 217 #define USERLIMIT32 ADDRESS_C(0xfffff000) 218 #else 219 #define USERLIMIT32 ADDRESS_C(0xfefff000) 220 #endif 221 222 #if !defined(_ASM) && !defined(_KMDB) 223 extern uintptr_t kernelbase, segmap_start, segmapsize; 224 #endif 225 226 /* 227 * reserve space for modules 228 */ 229 #define MODTEXT (1024 * 1024 * 2) 230 #define MODDATA (1024 * 300) 231 232 /* 233 * The heap has a region allocated from it of HEAPTEXT_SIZE bytes specifically 234 * for module text. 235 */ 236 #define HEAPTEXT_SIZE (128 * 1024 * 1024) /* bytes */ 237 238 /* 239 * Bus types 240 */ 241 #define BTISA 1 242 #define BTEISA 2 243 244 #ifdef __cplusplus 245 } 246 #endif 247 248 #endif /* _SYS_MACHPARAM_H */ 249