[apple/xnu.git] / osfmk / mach / i386 / vm_param.h

/*
 * Copyright (c) 2000-2006 Apple Computer, 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 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) 0x00007FFF5FC00000ULL)
#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 

/* 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	(96*GB)
#if defined(__i386__)
#define KERNEL_MAXMEM	K32_MAXMEM
#else
#define KERNEL_MAXMEM	K64_MAXMEM
#endif

/*
 * 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.
 */

#if defined(__i386__)

#define KERNEL_IMAGE_TO_PHYS(x) (x)
#define VM_MIN_KERNEL_ADDRESS		((vm_offset_t) 0x00001000U)
#define VM_MIN_KERNEL_AND_KEXT_ADDRESS	VM_MIN_KERNEL_ADDRESS
#define VM_MAX_KERNEL_ADDRESS		((vm_offset_t) 0xFE7FFFFFU)

#elif defined(__x86_64__)

#define KERNEL_IMAGE_TO_PHYS(x) (x)
#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_IS_KEXT(_o)						       \
                (((vm_offset_t)(_o) >= VM_MIN_KERNEL_AND_KEXT_ADDRESS) &&      \
                 ((vm_offset_t)(_o) <  VM_MIN_KERNEL_ADDRESS))

#else
#error unsupported architecture
#endif

#define KERNEL_STACK_SIZE	(I386_PGBYTES*4)

#define VM_MAP_MIN_ADDRESS	MACH_VM_MIN_ADDRESS
#define VM_MAP_MAX_ADDRESS	MACH_VM_MAX_ADDRESS

/* FIXME  - always leave like this? */
#define	INTSTACK_SIZE	(I386_PGBYTES*4)

#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.
 */

#if defined(__i386__)

#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) 0x00000000U)
#define VM_MAX_KERNEL_LOADED_ADDRESS	((vm_offset_t) 0x1FFFFFFFU)

#define NCOPY_WINDOWS 4

#elif defined(__x86_64__)

#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


#else
#error unsupported architecture
#endif

/*
 *	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((mem)->phys_page, (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 + PAGE_SIZE))

#endif	/* MACH_KERNEL_PRIVATE */

#endif	/* KERNEL_PRIVATE */

#endif	/* _MACH_I386_VM_PARAM_H_ */
Commit	Line	Data
1c79356b	1	/*
2d21ac55	2	* Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* @OSF_COPYRIGHT@
	30	*/
	31	/*
	32	* Mach Operating System
	33	* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
	34	* All Rights Reserved.
	35	*
	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
	41	*
	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	45	*
	46	* Carnegie Mellon requests users of this software to return to
	47	*
	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
	52	*
	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
	56
	57	/*
	58	* Copyright (c) 1994 The University of Utah and
	59	* the Computer Systems Laboratory at the University of Utah (CSL).
	60	* All rights reserved.
	61	*
	62	* Permission to use, copy, modify and distribute this software is hereby
	63	* granted provided that (1) source code retains these copyright, permission,
	64	* and disclaimer notices, and (2) redistributions including binaries
	65	* reproduce the notices in supporting documentation, and (3) all advertising
	66	* materials mentioning features or use of this software display the following
	67	* acknowledgement: ``This product includes software developed by the
	68	* Computer Systems Laboratory at the University of Utah.''
	69	*
	70	* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
	71	* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
	72	* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	73	*
	74	* CSL requests users of this software to return to csl-dist@cs.utah.edu any
	75	* improvements that they make and grant CSL redistribution rights.
	76	*
	77	*/
	78
	79	/*
	80	* File: vm_param.h
	81	* Author: Avadis Tevanian, Jr.
	82	* Date: 1985
	83	*
	84	* I386 machine dependent virtual memory parameters.
	85	* Most of the declarations are preceeded by I386_ (or i386_)
	86	* which is OK because only I386 specific code will be using
	87	* them.
	88	*/
	89
	90	#ifndef _MACH_I386_VM_PARAM_H_
91	#define _MACH_I386_VM_PARAM_H_
92
91447636	93	#define BYTE_SIZE 8 /* byte size in bits */
1c79356b	94
b0d623f7 A	95	#define I386_PGBYTES 4096 /* bytes per 80386 page */
b0d623f7 A	96	#define I386_PGSHIFT 12 /* bitshift for pages */
91447636 A	97
	98	#define PAGE_SIZE I386_PGBYTES
	99	#define PAGE_SHIFT I386_PGSHIFT
	100	#define PAGE_MASK (PAGE_SIZE - 1)
1c79356b	101
b0d623f7 A	102	#define I386_LPGBYTES 210241024 /* bytes per large page */
	103	#define I386_LPGSHIFT 21 /* bitshift for large pages */
	104	#define I386_LPGMASK (I386_LPGBYTES-1)
	105
1c79356b A	106	/*
	107	* Convert bytes to pages and convert pages to bytes.
	108	* No rounding is used.
	109	*/
	110
b0d623f7	111	#define i386_btop(x) ((ppnum_t)((x) >> I386_PGSHIFT))
1c79356b	112	#define machine_btop(x) i386_btop(x)
91447636	113	#define i386_ptob(x) (((pmap_paddr_t)(x)) << I386_PGSHIFT)
316670eb	114	#define machine_ptob(x) i386_ptob(x)
1c79356b A	115
	116	/*
	117	* Round off or truncate to the nearest page. These will work
	118	* for either addresses or counts. (i.e. 1 byte rounds to 1 page
	119	* bytes.
	120	*/
	121
91447636	122	#define i386_round_page(x) ((((pmap_paddr_t)(x)) + I386_PGBYTES - 1) & \
1c79356b	123	~(I386_PGBYTES-1))
91447636	124	#define i386_trunc_page(x) (((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1))
1c79356b	125
0c530ab8 A	126
	127
	128	#define VM_MIN_ADDRESS64 ((user_addr_t) 0x0000000000000000ULL)
	129	/*
	130	* default top of user stack... it grows down from here
	131	*/
	132	#define VM_USRSTACK64 ((user_addr_t) 0x00007FFF5FC00000ULL)
	133	#define VM_DYLD64 ((user_addr_t) 0x00007FFF5FC00000ULL)
	134	#define VM_LIB64_SHR_DATA ((user_addr_t) 0x00007FFF60000000ULL)
	135	#define VM_LIB64_SHR_TEXT ((user_addr_t) 0x00007FFF80000000ULL)
	136	/*
	137	* the end of the usable user address space , for now about 47 bits.
	138	* the 64 bit commpage is past the end of this
	139	*/
	140	#define VM_MAX_PAGE_ADDRESS ((user_addr_t) 0x00007FFFFFE00000ULL)
	141	/*
	142	* canonical end of user address space for limits checking
	143	*/
	144	#define VM_MAX_USER_PAGE_ADDRESS ((user_addr_t)0x00007FFFFFFFF000ULL)
	145
	146
91447636 A	147	/* system-wide values */
	148	#define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) 0)
	149	#define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS)
	150
	151	/* process-relative values (all 32-bit legacy only for now) */
1c79356b	152	#define VM_MIN_ADDRESS ((vm_offset_t) 0)
316670eb	153	#define VM_USRSTACK32 ((vm_offset_t) 0xC0000000) /* ASLR slides stack down by up to 1 MB */
0c530ab8 A	154	#define VM_MAX_ADDRESS ((vm_offset_t) 0xFFE00000)
	155
	156
91447636	157	#ifdef KERNEL_PRIVATE
1c79356b	158
91447636	159	/* Kernel-wide values */
b0d623f7 A	160
	161	#define KB (1024ULL)
	162	#define MB (1024*KB)
	163	#define GB (1024*MB)
	164
	165	/*
	166	* Maximum physical memory supported.
	167	*/
	168	#define K32_MAXMEM (32*GB)
	169	#define K64_MAXMEM (96*GB)
	170	#if defined(__i386__)
	171	#define KERNEL_MAXMEM K32_MAXMEM
	172	#else
	173	#define KERNEL_MAXMEM K64_MAXMEM
	174	#endif
	175
0c530ab8 A	176	/*
	177	* XXX
	178	* The kernel max VM address is limited to 0xFF3FFFFF for now because
	179	* some data structures are explicitly allocated at 0xFF400000 without
	180	* VM's knowledge (see osfmk/i386/locore.s for the allocation of PTmap and co.).
	181	* We can't let VM allocate memory from there.
	182	*/
	183
b0d623f7 A	184	#if defined(__i386__)
b0d623f7 A	185
6d2010ae A	186	#define KERNEL_IMAGE_TO_PHYS(x) (x)
	187	#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t) 0x00001000U)
	188	#define VM_MIN_KERNEL_AND_KEXT_ADDRESS VM_MIN_KERNEL_ADDRESS
	189	#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t) 0xFE7FFFFFU)
1c79356b	190
b0d623f7 A	191	#elif defined(__x86_64__)
b0d623f7 A	192
6d2010ae A	193	#define KERNEL_IMAGE_TO_PHYS(x) (x)
	194	#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t) 0xFFFFFF8000000000UL)
	195	#define VM_MIN_KERNEL_PAGE ((ppnum_t)0)
	196	#define VM_MIN_KERNEL_AND_KEXT_ADDRESS (VM_MIN_KERNEL_ADDRESS - 0x80000000ULL)
	197	#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t) 0xFFFFFFFFFFFFEFFFUL)
	198	#define VM_MAX_KERNEL_ADDRESS_EFI32 ((vm_offset_t) 0xFFFFFF80FFFFEFFFUL)
	199	#define KEXT_ALLOC_MAX_OFFSET (2 * 1024 * 1024 * 1024UL)
	200	#define KEXT_ALLOC_BASE(x) ((x) - KEXT_ALLOC_MAX_OFFSET)
	201	#define KEXT_ALLOC_SIZE(x) (KEXT_ALLOC_MAX_OFFSET - (x))
b0d623f7	202
316670eb A	203	#define VM_KERNEL_IS_KEXT(_o) \
	204	(((vm_offset_t)(_o) >= VM_MIN_KERNEL_AND_KEXT_ADDRESS) && \
	205	((vm_offset_t)(_o) < VM_MIN_KERNEL_ADDRESS))
	206
b0d623f7 A	207	#else
	208	#error unsupported architecture
	209	#endif
	210
6d2010ae A	211	#define KERNEL_STACK_SIZE (I386_PGBYTES*4)
6d2010ae A	212
0c530ab8 A	213	#define VM_MAP_MIN_ADDRESS MACH_VM_MIN_ADDRESS
	214	#define VM_MAP_MAX_ADDRESS MACH_VM_MAX_ADDRESS
	215
1c79356b A	216	/* FIXME - always leave like this? */
1c79356b A	217	#define INTSTACK_SIZE (I386_PGBYTES*4)
91447636 A	218
	219	#ifdef MACH_KERNEL_PRIVATE
	220
	221	/* For implementing legacy 32-bit interfaces */
b0d623f7	222	#define VM32_SUPPORT 1
91447636 A	223	#define VM32_MIN_ADDRESS ((vm32_offset_t) 0)
	224	#define VM32_MAX_ADDRESS ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))
	225
316670eb A	226	/*
	227	* kalloc() parameters:
	228	*
	229	* Historically kalloc's underlying zones were power-of-2 sizes, with a
	230	* KALLOC_MINSIZE of 16 bytes. The allocator ensured that
	231	* (sizeof == alignof) >= 16 for all kalloc allocations.
	232	*
	233	* Today kalloc may use zones with intermediate sizes, constrained by
	234	* KALLOC_MINSIZE and a minimum alignment, expressed by KALLOC_LOG2_MINALIGN.
	235	*
	236	* The common alignment for LP64 is for longs and pointers i.e. 8 bytes.
	237	*/
	238
b0d623f7 A	239	#if defined(__i386__)
b0d623f7 A	240
316670eb A	241	#define KALLOC_MINSIZE 16 /* minimum allocation size */
	242	#define KALLOC_LOG2_MINALIGN 4 /* log2 minimum alignment */
	243
0c530ab8	244	#define LINEAR_KERNEL_ADDRESS ((vm_offset_t) 0x00000000)
91447636	245
0c530ab8	246	#define VM_MIN_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0x00000000U)
b0d623f7	247	#define VM_MAX_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0x1FFFFFFFU)
1c79356b	248
2d21ac55	249	#define NCOPY_WINDOWS 4
0c530ab8	250
b0d623f7 A	251	#elif defined(__x86_64__)
b0d623f7 A	252
316670eb A	253	#define KALLOC_MINSIZE 16 /* minimum allocation size */
	254	#define KALLOC_LOG2_MINALIGN 4 /* log2 minimum alignment */
	255
b0d623f7 A	256	#define LINEAR_KERNEL_ADDRESS ((vm_offset_t) 0x00000000)
	257
	258	#define VM_MIN_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0xFFFFFF8000000000UL)
	259	#define VM_MAX_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0xFFFFFF801FFFFFFFUL)
	260
	261	#define NCOPY_WINDOWS 0
	262
316670eb	263
b0d623f7 A	264	#else
	265	#error unsupported architecture
	266	#endif
	267
1c79356b A	268	/*
	269	* Conversion between 80386 pages and VM pages
	270	*/
	271
	272	#define trunc_i386_to_vm(p) (atop(trunc_page(i386_ptob(p))))
	273	#define round_i386_to_vm(p) (atop(round_page(i386_ptob(p))))
	274	#define vm_to_i386(p) (i386_btop(ptoa(p)))
	275
1c79356b	276
316670eb A	277	#define PMAP_SET_CACHE_ATTR(mem, object, cache_attr, batch_pmap_op) \
	278	MACRO_BEGIN \
	279	pmap_set_cache_attributes((mem)->phys_page, (cache_attr)); \
	280	(object)->set_cache_attr = TRUE; \
	281	(void) batch_pmap_op; \
	282	MACRO_END
	283
	284	#define PMAP_BATCH_SET_CACHE_ATTR(object, user_page_list, cache_attr, num_pages, batch_pmap_op)\
d1ecb069	285	MACRO_BEGIN \
316670eb A	286	(void) user_page_list; \
	287	(void) num_pages; \
	288	(void) batch_pmap_op; \
d1ecb069 A	289	MACRO_END
d1ecb069 A	290
0c530ab8 A	291	#define IS_USERADDR64_CANONICAL(addr) \
	292	((addr) < (VM_MAX_USER_PAGE_ADDRESS + PAGE_SIZE))
	293
91447636 A	294	#endif /* MACH_KERNEL_PRIVATE */
	295
	296	#endif /* KERNEL_PRIVATE */
	297
1c79356b	298	#endif /* _MACH_I386_VM_PARAM_H_ */