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 #define NUMA_NODEMASK 0x0f 74 75 /* 76 * Define the FPU symbol if we could run on a machine with an external 77 * FPU (i.e. not integrated with the normal machine state like the vax). 78 * 79 * The fpu is defined in the architecture manual, and the kernel hides 80 * its absence if it is not present, that's pretty integrated, no? 81 */ 82 83 /* supported page sizes */ 84 #define MMU_PAGE_SIZES 3 85 86 /* 87 * MMU_PAGES* describes the physical page size used by the mapping hardware. 88 * PAGES* describes the logical page size used by the system. 89 */ 90 91 #define MMU_PAGESIZE 0x1000 /* 4096 bytes */ 92 #define MMU_PAGESHIFT 12 /* log2(MMU_PAGESIZE) */ 93 94 #if !defined(_ASM) 95 #define MMU_PAGEOFFSET (MMU_PAGESIZE-1) /* Mask of address bits in page */ 96 #else /* _ASM */ 97 #define MMU_PAGEOFFSET _CONST(MMU_PAGESIZE-1) /* assembler lameness */ 98 #endif /* _ASM */ 99 100 #define MMU_PAGEMASK (~MMU_PAGEOFFSET) 101 102 #define PAGESIZE 0x1000 /* All of the above, for logical */ 103 #define PAGESHIFT 12 104 #define PAGEOFFSET (PAGESIZE - 1) 105 #define PAGEMASK (~PAGEOFFSET) 106 107 /* 108 * DATA_ALIGN is used to define the alignment of the Unix data segment. 109 */ 110 #define DATA_ALIGN PAGESIZE 111 112 /* 113 * DEFAULT KERNEL THREAD stack size (in pages). 114 */ 115 #define DEFAULTSTKSZ_NPGS 5 116 117 #if !defined(_ASM) 118 #define DEFAULTSTKSZ (DEFAULTSTKSZ_NPGS * PAGESIZE) 119 #else /* !_ASM */ 120 #define DEFAULTSTKSZ _MUL(DEFAULTSTKSZ_NPGS, PAGESIZE) /* as(1) lameness */ 121 #endif /* !_ASM */ 122 123 /* 124 * During intial boot we limit heap to the top 4Gig. 125 */ 126 #define BOOT_KERNELHEAP_BASE ADDRESS_C(0xffffffff00000000) 127 128 /* 129 * VMWare works best if we don't use the top 64Meg of memory for amd64. 130 * Set KERNEL_TEXT to top_o_memory - 64Meg - 8 Meg for 8Meg of nucleus pages. 131 */ 132 #define PROMSTART ADDRESS_C(0xffc00000) 133 134 /* 135 * Virtual address range available to the debugger 136 */ 137 #define SEGDEBUGBASE ADDRESS_C(0xffffffffff800000) 138 #define SEGDEBUGSIZE ADDRESS_C(0x400000) 139 140 #define KERNEL_TEXT UINT64_C(0xfffffffffb800000) 141 142 /* 143 * Reserve pages just below KERNEL_TEXT for the GDT, IDT, LDT, TSS and debug 144 * info. 145 * 146 * For now, DEBUG_INFO_VA must be first in this list for "xm" initiated dumps 147 * of solaris domUs to be usable with mdb. Relying on a fixed VA is not viable 148 * long term, but it's the best we've got for now. 149 */ 150 #if !defined(_ASM) 151 #define DEBUG_INFO_VA (KERNEL_TEXT - MMU_PAGESIZE) 152 #define GDT_VA (DEBUG_INFO_VA - MMU_PAGESIZE) 153 #define IDT_VA (GDT_VA - MMU_PAGESIZE) 154 #define LDT_VA (IDT_VA - (16 * MMU_PAGESIZE)) 155 #define KTSS_VA (LDT_VA - MMU_PAGESIZE) 156 #define DFTSS_VA (KTSS_VA - MMU_PAGESIZE) 157 #define MISC_VA_BASE (DFTSS_VA) 158 #define MISC_VA_SIZE (KERNEL_TEXT - MISC_VA_BASE) 159 #endif /* !_ASM */ 160 161 /* 162 * Base of 'core' heap area, which is used for kernel and module text/data 163 * that must be within a 2GB range to allow for rip-relative addressing. 164 */ 165 #define COREHEAP_BASE ADDRESS_C(0xffffffffc0000000) 166 167 /* 168 * This is valloc_base, above seg_kpm, but below everything else. 169 * A lower value than this may be used if SEGKPM_BASE is adjusted. 170 * See i86pc/os/startup.c 171 */ 172 #define VALLOC_BASE ADDRESS_C(0xfffffe0000000000) 173 174 #define SEGZIOMINSIZE (400L * 1024 * 1024L) /* 400M */ 175 #define SEGVMMMINSIZE (4096L * 1024 * 1024L) /* 4G */ 176 177 #define SEGKPDEFSIZE (2L * 1024L * 1024L * 1024L) /* 2G */ 178 #define SEGKPMAXSIZE (8L * 1024L * 1024L * 1024L) /* 8G */ 179 #define SEGKPMINSIZE (200L * 1024 * 1024L) /* 200M */ 180 181 #define SEGKPM_BASE ADDRESS_C(0xfffffd0000000000) 182 183 /* 184 * KERNELBASE is the virtual address at which the kernel segments start in 185 * all contexts. 186 * 187 * KERNELBASE is not fixed. The value of KERNELBASE can change with 188 * installed memory size. 189 * 190 * common/conf/param.c requires a compile time defined value for KERNELBASE. 191 * This value is save in the variable _kernelbase. _kernelbase may then be 192 * modified with to a different value in i86pc/os/startup.c. 193 * 194 * Most code should be using kernelbase, which resolves to a reference to 195 * _kernelbase. 196 */ 197 #define KERNELBASE ADDRESS_C(0xfffffc8000000000) 198 199 /* 200 * Size of the unmapped "red zone" at the very bottom of the kernel's 201 * address space. Corresponds to 1 slot in the toplevel pagetable. 202 */ 203 #define KERNEL_REDZONE_SIZE ((uintptr_t)1 << 39) 204 205 /* 206 * Define upper limit on user address space 207 * 208 * The upper limit on a 64-bit user address space is 1 large page 209 * (2MB) below kernelbase. The upper limit for a 32-bit user address space 210 * is 1 small page (4KB) below the top of the 32-bit range. The 64-bit 211 * limit give dtrace the red zone it needs below kernelbase. The 32-bit 212 * limit gives us a small red zone to detect address-space overruns in a 213 * user program. 214 * 215 * On the hypervisor, we limit the user to memory below the VA hole. 216 * Subtract 1 large page for a red zone. 217 */ 218 #if defined(__xpv) 219 #define USERLIMIT ADDRESS_C(0x00007fffffe00000) 220 #else 221 #define USERLIMIT ADDRESS_C(0xfffffc7fffe00000) 222 #endif 223 224 #ifdef bug_5074717_is_fixed 225 #define USERLIMIT32 ADDRESS_C(0xfffff000) 226 #else 227 #define USERLIMIT32 ADDRESS_C(0xfefff000) 228 #endif 229 230 #if !defined(_ASM) && !defined(_KMDB) 231 extern uintptr_t kernelbase, segmap_start, segmapsize; 232 #endif 233 234 /* 235 * ARGSBASE is the base virtual address of the range which 236 * the kernel uses to map the arguments for exec. 237 */ 238 #define ARGSBASE PROMSTART 239 240 /* 241 * reserve space for modules 242 */ 243 #define MODTEXT (1024 * 1024 * 2) 244 #define MODDATA (1024 * 300) 245 246 /* 247 * The heap has a region allocated from it of HEAPTEXT_SIZE bytes specifically 248 * for module text. 249 */ 250 #define HEAPTEXT_SIZE (64 * 1024 * 1024) /* bytes */ 251 252 /* 253 * Size of a kernel threads stack. It must be a whole number of pages 254 * since the segment it comes from will only allocate space in pages. 255 */ 256 #define T_STACKSZ 2*PAGESIZE 257 258 /* 259 * Size of a cpu startup thread stack. (It must be a whole number of pages 260 * since the containing segment only allocates space in pages.) 261 */ 262 263 #define STARTUP_STKSZ 3*PAGESIZE 264 265 /* 266 * Bus types 267 */ 268 #define BTISA 1 269 #define BTEISA 2 270 #define BTMCA 3 271 272 #ifdef __cplusplus 273 } 274 #endif 275 276 #endif /* _SYS_MACHPARAM_H */ 277