/* * 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 2016 Joyent, Inc. */ /* Copyright (c) 1988 AT&T */ /* All Rights Reserved */ #ifndef _SYS_MACHPARAM_H #define _SYS_MACHPARAM_H #if !defined(_ASM) #include <sys/types.h> #if defined(__xpv) #include <sys/xpv_impl.h> #endif #endif #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 defined(__amd64) /* * If NCPU grows beyond 256, sizing for the x86 comm page will require * adjustment. */ #define NCPU 256 #define NCPU_LOG2 8 #elif defined(__i386) #define NCPU 32 #define NCPU_LOG2 5 #endif /* 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 #define NUMA_NODEMASK 0x0f /* * Define the FPU symbol if we could run on a machine with an external * FPU (i.e. not integrated with the normal machine state like the vax). * * The fpu is defined in the architecture manual, and the kernel hides * its absence if it is not present, that's pretty integrated, no? */ /* 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). */ #if defined(__amd64) #define DEFAULTSTKSZ_NPGS 5 #elif defined(__i386) #define DEFAULTSTKSZ_NPGS 3 #endif #if !defined(_ASM) #define DEFAULTSTKSZ (DEFAULTSTKSZ_NPGS * PAGESIZE) #else /* !_ASM */ #define DEFAULTSTKSZ _MUL(DEFAULTSTKSZ_NPGS, PAGESIZE) /* as(1) lameness */ #endif /* !_ASM */ /* * 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 or on 32 bit systems the eprom variable 'eprom_kernelbase'. * * 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 KERNEL_TEXT_amd64 UINT64_C(0xfffffffffb800000) #ifdef __i386 #define KERNEL_TEXT_i386 ADDRESS_C(0xfe800000) /* * We don't use HYPERVISOR_VIRT_START, as we need both the PAE and non-PAE * versions in our code. We always compile based on the lower PAE address. */ #define KERNEL_TEXT_i386_xpv \ (HYPERVISOR_VIRT_START_PAE - 3 * ADDRESS_C(0x400000)) #endif /* __i386 */ #if defined(__amd64) #define KERNELBASE ADDRESS_C(0xfffffd8000000000) /* * 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) /* * 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) /* * Beginning of the segkpm window. A lower value than this is used if * physical addresses exceed 1TB. See i86pc/os/startup.c */ #define SEGKPM_BASE ADDRESS_C(0xfffffe0000000000) /* * 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(0xffffff0000000000) /* * default and boundary sizes for segkp */ #define SEGKPDEFSIZE (2L * 1024L * 1024L * 1024L) /* 2G */ #define SEGKPMAXSIZE (8L * 1024L * 1024L * 1024L) /* 8G */ #define SEGKPMINSIZE (200L * 1024 * 1024L) /* 200M */ /* * minimum size for segzio */ #define SEGZIOMINSIZE (400L * 1024 * 1024L) /* 400M */ /* * During intial boot we limit heap to the top 4Gig. */ #define BOOT_KERNELHEAP_BASE ADDRESS_C(0xffffffff00000000) /* * VMWare works best if we don't use the top 64Meg of memory for amd64. * Set KERNEL_TEXT to top_o_memory - 64Meg - 8 Meg for 8Meg of nucleus pages. */ #define PROMSTART ADDRESS_C(0xffc00000) #define KERNEL_TEXT KERNEL_TEXT_amd64 /* * Virtual address range available to the debugger */ #define SEGDEBUGBASE ADDRESS_C(0xffffffffff800000) #define SEGDEBUGSIZE ADDRESS_C(0x400000) /* * Define upper limit on user address space * * In amd64, 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(0xfffffd7fffe00000) #endif #ifdef bug_5074717_is_fixed #define USERLIMIT32 ADDRESS_C(0xfffff000) #else #define USERLIMIT32 ADDRESS_C(0xfefff000) #endif #elif defined(__i386) #ifdef DEBUG #define KERNELBASE ADDRESS_C(0xc8000000) #else #define KERNELBASE ADDRESS_C(0xd4000000) #endif #define KERNELBASE_MAX ADDRESS_C(0xe0000000) /* * The i386 ABI requires that the user address space be at least 3Gb * in size. KERNELBASE_ABI_MIN is used as the default KERNELBASE for * physical memory configurations > 4gb. */ #define KERNELBASE_ABI_MIN ADDRESS_C(0xc0000000) /* * Size of the unmapped "red zone" at the very bottom of the kernel's * address space. Since segmap start immediately above the red zone, this * needs to be MAXBSIZE aligned. */ #define KERNEL_REDZONE_SIZE MAXBSIZE /* * This is the last 4MB of the 4G address space. Some psm modules * need this region of virtual address space mapped 1-1 * The top 64MB of the address space is reserved for the hypervisor. */ #define PROMSTART ADDRESS_C(0xffc00000) #ifdef __xpv #define KERNEL_TEXT KERNEL_TEXT_i386_xpv #else #define KERNEL_TEXT KERNEL_TEXT_i386 #endif /* * Virtual address range available to the debugger * We place it just above the kernel text (4M) and kernel data (4M). */ #define SEGDEBUGBASE (KERNEL_TEXT + ADDRESS_C(0x800000)) #define SEGDEBUGSIZE ADDRESS_C(0x400000) /* * Define upper limit on user address space */ #define USERLIMIT KERNELBASE #define USERLIMIT32 USERLIMIT #endif /* __i386 */ /* * Reserve pages just below KERNEL_TEXT for the GDT, IDT, 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 KTSS_VA (IDT_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 */ #if !defined(_ASM) && !defined(_KMDB) extern uintptr_t kernelbase, segmap_start, segmapsize; #endif /* * ARGSBASE is the base virtual address of the range which * the kernel uses to map the arguments for exec. */ #define ARGSBASE PROMSTART /* * 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 (64 * 1024 * 1024) /* bytes */ /* * Size of a kernel threads stack. It must be a whole number of pages * since the segment it comes from will only allocate space in pages. */ #define T_STACKSZ 2*PAGESIZE /* * Size of a cpu startup thread stack. (It must be a whole number of pages * since the containing segment only allocates space in pages.) */ #define STARTUP_STKSZ 3*PAGESIZE /* * Bus types */ #define BTISA 1 #define BTEISA 2 #define BTMCA 3 #ifdef __cplusplus } #endif #endif /* _SYS_MACHPARAM_H */