vmparam.h revision 225736 
1/*-
2 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
3 * Copyright (C) 1995, 1996 TooLs GmbH.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by TooLs GmbH.
17 * 4. The name of TooLs GmbH may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 *	$NetBSD: vmparam.h,v 1.11 2000/02/11 19:25:16 thorpej Exp $
32 * $FreeBSD: stable/9/sys/powerpc/include/vmparam.h 221855 2011-05-13 19:35:01Z mdf $
33 */
34
35#ifndef _MACHINE_VMPARAM_H_
36#define	_MACHINE_VMPARAM_H_
37
38#define	USRSTACK	SHAREDPAGE
39
40#ifndef	MAXTSIZ
41#define	MAXTSIZ		(64*1024*1024)		/* max text size */
42#endif
43
44#ifndef	DFLDSIZ
45#define	DFLDSIZ		(128*1024*1024)		/* default data size */
46#endif
47
48#ifndef	MAXDSIZ
49#define	MAXDSIZ		(1*1024*1024*1024)	/* max data size */
50#endif
51
52#ifndef	DFLSSIZ
53#define	DFLSSIZ		(8*1024*1024)		/* default stack size */
54#endif
55
56#ifndef	MAXSSIZ
57#define	MAXSSIZ		(64*1024*1024)		/* max stack size */
58#endif
59
60/*
61 * Would like to have MAX addresses = 0, but this doesn't (currently) work
62 */
63#if !defined(LOCORE)
64#ifdef __powerpc64__
65#define	VM_MIN_ADDRESS		(0x0000000000000000UL)
66#define	VM_MAXUSER_ADDRESS	(0x7ffffffffffff000UL)
67#define	SHAREDPAGE		(VM_MAXUSER_ADDRESS - PAGE_SIZE)
68#define	VM_MAX_ADDRESS		(0xffffffffffffffffUL)
69#else
70#define	VM_MIN_ADDRESS		((vm_offset_t)0)
71#define	VM_MAXUSER_ADDRESS	((vm_offset_t)0x7ffff000)
72#define	SHAREDPAGE		(VM_MAXUSER_ADDRESS - PAGE_SIZE)
73#define	VM_MAX_ADDRESS		VM_MAXUSER_ADDRESS
74#endif
75#else /* LOCORE */
76#ifndef __powerpc64__
77#define	VM_MIN_ADDRESS		0
78#define	VM_MAXUSER_ADDRESS	0x7ffff000
79#endif
80#endif /* LOCORE */
81
82#define	FREEBSD32_SHAREDPAGE	(0x7ffff000 - PAGE_SIZE)
83#define	FREEBSD32_USRSTACK	FREEBSD32_SHAREDPAGE
84
85#ifdef AIM
86#define	KERNBASE		0x00100000UL	/* start of kernel virtual */
87
88#ifdef __powerpc64__
89#define	VM_MIN_KERNEL_ADDRESS		0xc000000000000000UL
90#define	VM_MAX_KERNEL_ADDRESS		0xc0000001c7ffffffUL
91#define	VM_MAX_SAFE_KERNEL_ADDRESS	VM_MAX_KERNEL_ADDRESS
92#else
93#define	VM_MIN_KERNEL_ADDRESS	((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT)
94#define	VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1)
95#define	VM_MAX_KERNEL_ADDRESS	(VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1)
96#endif
97
98/*
99 * Use the direct-mapped BAT registers for UMA small allocs. This
100 * takes pressure off the small amount of available KVA.
101 */
102#define UMA_MD_SMALL_ALLOC
103
104#else /* Book-E */
105
106/*
107 * Kernel CCSRBAR location. We make this the reset location.
108 */
109#define	CCSRBAR_VA		0xfef00000
110#define	CCSRBAR_SIZE		0x00100000
111
112#define	KERNBASE		0xc0000000	/* start of kernel virtual */
113
114#define	VM_MIN_KERNEL_ADDRESS	KERNBASE
115#define	VM_MAX_KERNEL_ADDRESS	0xf8000000
116
117#endif /* AIM/E500 */
118
119/* XXX max. amount of KVM to be used by buffers. */
120#ifndef VM_MAX_KERNEL_BUF
121#define	VM_MAX_KERNEL_BUF	(SEGMENT_LENGTH * 7 / 10)
122#endif
123
124#if !defined(LOCORE)
125struct pmap_physseg {
126	struct pv_entry *pvent;
127	char *attrs;
128};
129#endif
130
131#define	VM_PHYSSEG_MAX		16	/* 1? */
132
133/*
134 * The physical address space is densely populated on 32-bit systems,
135 * but may not be on 64-bit ones.
136 */
137#ifdef __powerpc64__
138#define	VM_PHYSSEG_SPARSE
139#else
140#define	VM_PHYSSEG_DENSE
141#endif
142
143/*
144 * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool
145 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is
146 * the pool from which physical pages for small UMA objects are
147 * allocated.
148 */
149#define	VM_NFREEPOOL		3
150#define	VM_FREEPOOL_CACHE	2
151#define	VM_FREEPOOL_DEFAULT	0
152#define	VM_FREEPOOL_DIRECT	1
153
154/*
155 * Create one free page list.
156 */
157#define	VM_NFREELIST		1
158#define	VM_FREELIST_DEFAULT	0
159
160/*
161 * The largest allocation size is 4MB.
162 */
163#define	VM_NFREEORDER		11
164
165/*
166 * Only one memory domain.
167 */
168#ifndef VM_NDOMAIN
169#define	VM_NDOMAIN		1
170#endif
171
172/*
173 * Disable superpage reservations.
174 */
175#ifndef	VM_NRESERVLEVEL
176#define	VM_NRESERVLEVEL		0
177#endif
178
179#ifndef VM_INITIAL_PAGEIN
180#define	VM_INITIAL_PAGEIN	16
181#endif
182
183#ifndef SGROWSIZ
184#define	SGROWSIZ	(128UL*1024)		/* amount to grow stack */
185#endif
186
187#ifndef VM_KMEM_SIZE
188#define	VM_KMEM_SIZE		(12 * 1024 * 1024)
189#endif
190
191#ifdef __powerpc64__
192#ifndef VM_KMEM_SIZE_SCALE
193#define VM_KMEM_SIZE_SCALE      (3)
194#endif
195
196#ifndef VM_KMEM_SIZE_MAX
197#define VM_KMEM_SIZE_MAX        0x1c0000000  /* 7 GB */
198#endif
199#endif
200
201#define	ZERO_REGION_SIZE	(64 * 1024)	/* 64KB */
202
203#endif /* _MACHINE_VMPARAM_H_ */
204