/* * Copyright (c) 2000-2012 Apple Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* * Mach Operating System * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* * Copyright (c) 1994 The University of Utah and * the Computer Systems Laboratory at the University of Utah (CSL). * All rights reserved. * * Permission to use, copy, modify and distribute this software is hereby * granted provided that (1) source code retains these copyright, permission, * and disclaimer notices, and (2) redistributions including binaries * reproduce the notices in supporting documentation, and (3) all advertising * materials mentioning features or use of this software display the following * acknowledgement: ``This product includes software developed by the * Computer Systems Laboratory at the University of Utah.'' * * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * CSL requests users of this software to return to csl-dist@cs.utah.edu any * improvements that they make and grant CSL redistribution rights. * */ /* * File: vm_param.h * Author: Avadis Tevanian, Jr. * Date: 1985 * * I386 machine dependent virtual memory parameters. * Most of the declarations are preceeded by I386_ (or i386_) * which is OK because only I386 specific code will be using * them. */ #ifndef _MACH_I386_VM_PARAM_H_ #define _MACH_I386_VM_PARAM_H_ #define BYTE_SIZE 8 /* byte size in bits */ #define I386_PGBYTES 4096 /* bytes per 80386 page */ #define I386_PGSHIFT 12 /* bitshift for pages */ #define PAGE_SIZE I386_PGBYTES #define PAGE_SHIFT I386_PGSHIFT #define PAGE_MASK (PAGE_SIZE - 1) #define PAGE_MAX_SHIFT PAGE_SHIFT #define PAGE_MAX_SIZE PAGE_SIZE #define PAGE_MAX_MASK PAGE_MASK #define PAGE_MIN_SHIFT PAGE_SHIFT #define PAGE_MIN_SIZE PAGE_SIZE #define PAGE_MIN_MASK PAGE_MASK #define I386_LPGBYTES 2*1024*1024 /* bytes per large page */ #define I386_LPGSHIFT 21 /* bitshift for large pages */ #define I386_LPGMASK (I386_LPGBYTES-1) /* * Convert bytes to pages and convert pages to bytes. * No rounding is used. */ #define i386_btop(x) ((ppnum_t)((x) >> I386_PGSHIFT)) #define machine_btop(x) i386_btop(x) #define i386_ptob(x) (((pmap_paddr_t)(x)) << I386_PGSHIFT) #define machine_ptob(x) i386_ptob(x) /* * Round off or truncate to the nearest page. These will work * for either addresses or counts. (i.e. 1 byte rounds to 1 page * bytes. */ #define i386_round_page(x) ((((pmap_paddr_t)(x)) + I386_PGBYTES - 1) & \ ~(I386_PGBYTES-1)) #define i386_trunc_page(x) (((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1)) #define VM_MIN_ADDRESS64 ((user_addr_t) 0x0000000000000000ULL) /* * default top of user stack... it grows down from here */ #define VM_USRSTACK64 ((user_addr_t) 0x00007FFEEFC00000ULL) /* * XXX TODO: Obsolete? */ #define VM_DYLD64 ((user_addr_t) 0x00007FFF5FC00000ULL) #define VM_LIB64_SHR_DATA ((user_addr_t) 0x00007FFF60000000ULL) #define VM_LIB64_SHR_TEXT ((user_addr_t) 0x00007FFF80000000ULL) /* * the end of the usable user address space , for now about 47 bits. * the 64 bit commpage is past the end of this */ #define VM_MAX_PAGE_ADDRESS ((user_addr_t) 0x00007FFFFFE00000ULL) /* * canonical end of user address space for limits checking */ #define VM_MAX_USER_PAGE_ADDRESS ((user_addr_t)0x00007FFFFFFFF000ULL) /* system-wide values */ #define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) 0) #define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS) /* process-relative values (all 32-bit legacy only for now) */ #define VM_MIN_ADDRESS ((vm_offset_t) 0) #define VM_USRSTACK32 ((vm_offset_t) 0xC0000000) /* ASLR slides stack down by up to 1 MB */ #define VM_MAX_ADDRESS ((vm_offset_t) 0xFFE00000) #ifdef KERNEL_PRIVATE #define TEST_PAGE_SIZE_16K FALSE #define TEST_PAGE_SIZE_4K TRUE /* Kernel-wide values */ #define KB (1024ULL) #define MB (1024*KB) #define GB (1024*MB) /* * Maximum physical memory supported. */ #define K32_MAXMEM (32*GB) #define K64_MAXMEM (1536*GB) #define KERNEL_MAXMEM K64_MAXMEM /* * XXX * The kernel max VM address is limited to 0xFF3FFFFF for now because * some data structures are explicitly allocated at 0xFF400000 without * VM's knowledge (see osfmk/i386/locore.s for the allocation of PTmap and co.). * We can't let VM allocate memory from there. */ #define KERNEL_IMAGE_TO_PHYS(x) (x) #define VM_KERNEL_POINTER_SIGNIFICANT_BITS 39 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t) 0xFFFFFF8000000000UL) #define VM_MIN_KERNEL_PAGE ((ppnum_t)0) #define VM_MIN_KERNEL_AND_KEXT_ADDRESS (VM_MIN_KERNEL_ADDRESS - 0x80000000ULL) #define VM_MAX_KERNEL_ADDRESS ((vm_offset_t) 0xFFFFFFFFFFFFEFFFUL) #define VM_MAX_KERNEL_ADDRESS_EFI32 ((vm_offset_t) 0xFFFFFF80FFFFEFFFUL) #define KEXT_ALLOC_MAX_OFFSET (2 * 1024 * 1024 * 1024UL) #define KEXT_ALLOC_BASE(x) ((x) - KEXT_ALLOC_MAX_OFFSET) #define KEXT_ALLOC_SIZE(x) (KEXT_ALLOC_MAX_OFFSET - (x)) #define VM_KERNEL_STRIP_PTR(_v) (_v) #define VM_KERNEL_ADDRESS(va) ((((vm_address_t)(va))>=VM_MIN_KERNEL_AND_KEXT_ADDRESS) && \ (((vm_address_t)(va))<=VM_MAX_KERNEL_ADDRESS)) #define VM_MAP_MIN_ADDRESS MACH_VM_MIN_ADDRESS #define VM_MAP_MAX_ADDRESS MACH_VM_MAX_ADDRESS /* FIXME - always leave like this? */ #if KASAN /* Increase the stack sizes to account for the redzones that get added to every * stack object. */ # define INTSTACK_SIZE (I386_PGBYTES*4*4) # define KERNEL_STACK_SIZE (I386_PGBYTES*4*4) #elif DEBUG # define INTSTACK_SIZE (I386_PGBYTES*4) # define KERNEL_STACK_SIZE (I386_PGBYTES*6) #else # define INTSTACK_SIZE (I386_PGBYTES*4) # define KERNEL_STACK_SIZE (I386_PGBYTES*4) #endif #ifdef MACH_KERNEL_PRIVATE /* For implementing legacy 32-bit interfaces */ #define VM32_SUPPORT 1 #define VM32_MIN_ADDRESS ((vm32_offset_t) 0) #define VM32_MAX_ADDRESS ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF)) /* * kalloc() parameters: * * Historically kalloc's underlying zones were power-of-2 sizes, with a * KALLOC_MINSIZE of 16 bytes. The allocator ensured that * (sizeof == alignof) >= 16 for all kalloc allocations. * * Today kalloc may use zones with intermediate sizes, constrained by * KALLOC_MINSIZE and a minimum alignment, expressed by KALLOC_LOG2_MINALIGN. * * The common alignment for LP64 is for longs and pointers i.e. 8 bytes. */ #define KALLOC_MINSIZE 16 /* minimum allocation size */ #define KALLOC_LOG2_MINALIGN 4 /* log2 minimum alignment */ #define LINEAR_KERNEL_ADDRESS ((vm_offset_t) 0x00000000) #define VM_MIN_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0xFFFFFF8000000000UL) #define VM_MAX_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0xFFFFFF801FFFFFFFUL) #define NCOPY_WINDOWS 0 /* * Conversion between 80386 pages and VM pages */ #define trunc_i386_to_vm(p) (atop(trunc_page(i386_ptob(p)))) #define round_i386_to_vm(p) (atop(round_page(i386_ptob(p)))) #define vm_to_i386(p) (i386_btop(ptoa(p))) #define PMAP_SET_CACHE_ATTR(mem, object, cache_attr, batch_pmap_op) \ MACRO_BEGIN \ pmap_set_cache_attributes(VM_PAGE_GET_PHYS_PAGE(mem), (cache_attr)); \ (object)->set_cache_attr = TRUE; \ (void) batch_pmap_op; \ MACRO_END #define PMAP_BATCH_SET_CACHE_ATTR(object, user_page_list, cache_attr, num_pages, batch_pmap_op) \ MACRO_BEGIN \ (void) user_page_list; \ (void) num_pages; \ (void) batch_pmap_op; \ MACRO_END #define IS_USERADDR64_CANONICAL(addr) \ ((addr) < (VM_MAX_USER_PAGE_ADDRESS)) #endif /* MACH_KERNEL_PRIVATE */ #endif /* KERNEL_PRIVATE */ #endif /* _MACH_I386_VM_PARAM_H_ */