/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2015 by Delphix. All rights reserved. * Copyright 2018 Joyent, Inc. */ /* Copyright (c) 1988 AT&T */ /* All Rights Reserved */ #ifndef _SYS_MACHPARAM_H #define _SYS_MACHPARAM_H #ifndef _ASM #include <sys/types.h> #if defined(__xpv) #include <sys/xpv_impl.h> #endif #endif /* !_ASM */ #ifdef __cplusplus extern "C" { #endif #ifndef _ASM #define ADDRESS_C(c) c ## ul #else /* _ASM */ #define ADDRESS_C(c) (c) #endif /* _ASM */ /* * Machine dependent parameters and limits. */ /* * If NCPU grows beyond 256, sizing for the x86 comm page will require * adjustment. */ #define NCPU 256 #define NCPU_LOG2 8 /* NCPU_P2 is NCPU rounded to a power of 2 */ #define NCPU_P2 (1 << NCPU_LOG2) /* * The value defined below could grow to 16. hat structure and * page_t have room for 16 nodes. */ #define MAXNODES 4 /* supported page sizes */ #define MMU_PAGE_SIZES 3 /* * MMU_PAGES* describes the physical page size used by the mapping hardware. * PAGES* describes the logical page size used by the system. */ #define MMU_PAGESIZE 0x1000 /* 4096 bytes */ #define MMU_PAGESHIFT 12 /* log2(MMU_PAGESIZE) */ #if !defined(_ASM) #define MMU_PAGEOFFSET (MMU_PAGESIZE-1) /* Mask of address bits in page */ #else /* _ASM */ #define MMU_PAGEOFFSET _CONST(MMU_PAGESIZE-1) /* assembler lameness */ #endif /* _ASM */ #define MMU_PAGEMASK (~MMU_PAGEOFFSET) #define PAGESIZE 0x1000 /* All of the above, for logical */ #define PAGESHIFT 12 #define PAGEOFFSET (PAGESIZE - 1) #define PAGEMASK (~PAGEOFFSET) /* * DATA_ALIGN is used to define the alignment of the Unix data segment. */ #define DATA_ALIGN PAGESIZE /* * DEFAULT KERNEL THREAD stack size (in pages). */ #define DEFAULTSTKSZ_NPGS 5 #if !defined(_ASM) #define DEFAULTSTKSZ (DEFAULTSTKSZ_NPGS * PAGESIZE) #else /* !_ASM */ #define DEFAULTSTKSZ _MUL(DEFAULTSTKSZ_NPGS, PAGESIZE) /* as(1) lameness */ #endif /* !_ASM */ /* * Use a slightly larger thread stack size for interrupt threads rather than * the default. This is useful for cases where the networking stack may do an * rx and a tx in the context of a single interrupt and when combined with * various promisc hooks that need memory, can cause us to get dangerously * close to the edge of the traditional stack sizes. This is only a few pages * more than a traditional stack and given that we don't have that many * interrupt threads, the memory costs end up being more than worthwhile. */ #define LL_INTR_STKSZ_NPGS 8 #define LL_INTR_STKSZ (LL_INTR_STKSZ_NPGS * PAGESIZE) /* * Virtual address range available to the debugger */ #define SEGDEBUGBASE ADDRESS_C(0xffffffffff800000) #define SEGDEBUGSIZE ADDRESS_C(0x400000) #define KERNEL_TEXT UINT64_C(0xfffffffffb800000) /* * Reserve pages just below KERNEL_TEXT for the GDT, IDT, LDT, TSS and debug * info. * * For now, DEBUG_INFO_VA must be first in this list for "xm" initiated dumps * of solaris domUs to be usable with mdb. Relying on a fixed VA is not viable * long term, but it's the best we've got for now. */ #if !defined(_ASM) #define DEBUG_INFO_VA (KERNEL_TEXT - MMU_PAGESIZE) #define GDT_VA (DEBUG_INFO_VA - MMU_PAGESIZE) #define IDT_VA (GDT_VA - MMU_PAGESIZE) #define LDT_VA (IDT_VA - (16 * MMU_PAGESIZE)) #define KTSS_VA (LDT_VA - MMU_PAGESIZE) #define DFTSS_VA (KTSS_VA - MMU_PAGESIZE) #define MISC_VA_BASE (DFTSS_VA) #define MISC_VA_SIZE (KERNEL_TEXT - MISC_VA_BASE) #endif /* !_ASM */ /* * Base of 'core' heap area, which is used for kernel and module text/data * that must be within a 2GB range to allow for rip-relative addressing. */ #define COREHEAP_BASE ADDRESS_C(0xffffffffc0000000) /* * This is valloc_base, above seg_kpm, but below everything else. * A lower value than this may be used if SEGKPM_BASE is adjusted. * See i86pc/os/startup.c */ #define VALLOC_BASE ADDRESS_C(0xfffffe0000000000) #define SEGZIOMINSIZE (400L * 1024 * 1024L) /* 400M */ #define SEGVMMMINSIZE (4096L * 1024 * 1024L) /* 4G */ #define SEGKPDEFSIZE (2L * 1024L * 1024L * 1024L) /* 2G */ #define SEGKPMAXSIZE (8L * 1024L * 1024L * 1024L) /* 8G */ #define SEGKPMINSIZE (200L * 1024 * 1024L) /* 200M */ #define SEGKPM_BASE ADDRESS_C(0xfffffd0000000000) /* * KERNELBASE is the virtual address at which the kernel segments start in * all contexts. * * KERNELBASE is not fixed. The value of KERNELBASE can change with * installed memory size. * * common/conf/param.c requires a compile time defined value for KERNELBASE. * This value is save in the variable _kernelbase. _kernelbase may then be * modified with to a different value in i86pc/os/startup.c. * * Most code should be using kernelbase, which resolves to a reference to * _kernelbase. */ #define KERNELBASE ADDRESS_C(0xfffffc8000000000) /* * Size of the unmapped "red zone" at the very bottom of the kernel's * address space. Corresponds to 1 slot in the toplevel pagetable. */ #define KERNEL_REDZONE_SIZE ((uintptr_t)1 << 39) /* * Define upper limit on user address space * * The upper limit on a 64-bit user address space is 1 large page * (2MB) below kernelbase. The upper limit for a 32-bit user address space * is 1 small page (4KB) below the top of the 32-bit range. The 64-bit * limit give dtrace the red zone it needs below kernelbase. The 32-bit * limit gives us a small red zone to detect address-space overruns in a * user program. * * On the hypervisor, we limit the user to memory below the VA hole. * Subtract 1 large page for a red zone. */ #if defined(__xpv) #define USERLIMIT ADDRESS_C(0x00007fffffe00000) #else #define USERLIMIT ADDRESS_C(0xfffffc7fffe00000) #endif #ifdef bug_5074717_is_fixed #define USERLIMIT32 ADDRESS_C(0xfffff000) #else #define USERLIMIT32 ADDRESS_C(0xfefff000) #endif #if !defined(_ASM) && !defined(_KMDB) extern uintptr_t kernelbase, segmap_start, segmapsize; #endif /* * reserve space for modules */ #define MODTEXT (1024 * 1024 * 2) #define MODDATA (1024 * 300) /* * The heap has a region allocated from it of HEAPTEXT_SIZE bytes specifically * for module text. */ #define HEAPTEXT_SIZE (128 * 1024 * 1024) /* bytes */ /* * Bus types */ #define BTISA 1 #define BTEISA 2 #ifdef __cplusplus } #endif #endif /* _SYS_MACHPARAM_H */
