xref: /freebsd/sys/powerpc/include/vmparam.h (revision 9a14aa017b21c292740c00ee098195cd46642730)
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  * $FreeBSD$
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 #ifdef AIM
61 #define	VM_MAXUSER_ADDRESS32	((vm_offset_t)0xfffff000)
62 #else
63 #define	VM_MAXUSER_ADDRESS32	((vm_offset_t)0x7ffff000)
64 #endif
65 
66 /*
67  * Would like to have MAX addresses = 0, but this doesn't (currently) work
68  */
69 #if !defined(LOCORE)
70 #ifdef __powerpc64__
71 #define	VM_MIN_ADDRESS		(0x0000000000000000UL)
72 #define	VM_MAXUSER_ADDRESS	(0xfffffffffffff000UL)
73 #define	VM_MAX_ADDRESS		(0xffffffffffffffffUL)
74 #else
75 #define	VM_MIN_ADDRESS		((vm_offset_t)0)
76 #define	VM_MAXUSER_ADDRESS	VM_MAXUSER_ADDRESS32
77 #define	VM_MAX_ADDRESS		((vm_offset_t)0xffffffff)
78 #endif
79 #define	SHAREDPAGE		(VM_MAXUSER_ADDRESS - PAGE_SIZE)
80 #else /* LOCORE */
81 #if !defined(__powerpc64__) && defined(E500)
82 #define	VM_MIN_ADDRESS		0
83 #define	VM_MAXUSER_ADDRESS	0x7ffff000
84 #endif
85 #endif /* LOCORE */
86 
87 #define	FREEBSD32_SHAREDPAGE	(VM_MAXUSER_ADDRESS32 - PAGE_SIZE)
88 #define	FREEBSD32_USRSTACK	FREEBSD32_SHAREDPAGE
89 
90 #ifdef AIM
91 #define	KERNBASE		0x00100000UL	/* start of kernel virtual */
92 
93 #ifdef __powerpc64__
94 #define	VM_MIN_KERNEL_ADDRESS		0xc000000000000000UL
95 #define	VM_MAX_KERNEL_ADDRESS		0xc0000001c7ffffffUL
96 #define	VM_MAX_SAFE_KERNEL_ADDRESS	VM_MAX_KERNEL_ADDRESS
97 #else
98 #define	VM_MIN_KERNEL_ADDRESS	((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT)
99 #define	VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1)
100 #define	VM_MAX_KERNEL_ADDRESS	(VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1)
101 #endif
102 
103 /*
104  * Use the direct-mapped BAT registers for UMA small allocs. This
105  * takes pressure off the small amount of available KVA.
106  */
107 #define UMA_MD_SMALL_ALLOC
108 
109 #else /* Book-E */
110 
111 /*
112  * Kernel CCSRBAR location. We make this the reset location.
113  */
114 #define	CCSRBAR_VA		0xfef00000
115 #define	CCSRBAR_SIZE		0x00100000
116 
117 #define	KERNBASE		0xc0000000	/* start of kernel virtual */
118 
119 #define	VM_MIN_KERNEL_ADDRESS	KERNBASE
120 #define	VM_MAX_KERNEL_ADDRESS	0xf8000000
121 
122 #endif /* AIM/E500 */
123 
124 /* XXX max. amount of KVM to be used by buffers. */
125 #ifndef VM_MAX_KERNEL_BUF
126 #define	VM_MAX_KERNEL_BUF	(SEGMENT_LENGTH * 7 / 10)
127 #endif
128 
129 #if !defined(LOCORE)
130 struct pmap_physseg {
131 	struct pv_entry *pvent;
132 	char *attrs;
133 };
134 #endif
135 
136 #define	VM_PHYSSEG_MAX		16	/* 1? */
137 
138 /*
139  * The physical address space is densely populated on 32-bit systems,
140  * but may not be on 64-bit ones.
141  */
142 #ifdef __powerpc64__
143 #define	VM_PHYSSEG_SPARSE
144 #else
145 #define	VM_PHYSSEG_DENSE
146 #endif
147 
148 /*
149  * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool
150  * from which physical pages are allocated and VM_FREEPOOL_DIRECT is
151  * the pool from which physical pages for small UMA objects are
152  * allocated.
153  */
154 #define	VM_NFREEPOOL		3
155 #define	VM_FREEPOOL_CACHE	2
156 #define	VM_FREEPOOL_DEFAULT	0
157 #define	VM_FREEPOOL_DIRECT	1
158 
159 /*
160  * Create one free page list.
161  */
162 #define	VM_NFREELIST		1
163 #define	VM_FREELIST_DEFAULT	0
164 
165 /*
166  * The largest allocation size is 4MB.
167  */
168 #define	VM_NFREEORDER		11
169 
170 /*
171  * Only one memory domain.
172  */
173 #ifndef VM_NDOMAIN
174 #define	VM_NDOMAIN		1
175 #endif
176 
177 /*
178  * Disable superpage reservations.
179  */
180 #ifndef	VM_NRESERVLEVEL
181 #define	VM_NRESERVLEVEL		0
182 #endif
183 
184 #ifndef VM_INITIAL_PAGEIN
185 #define	VM_INITIAL_PAGEIN	16
186 #endif
187 
188 #ifndef SGROWSIZ
189 #define	SGROWSIZ	(128UL*1024)		/* amount to grow stack */
190 #endif
191 
192 #ifndef VM_KMEM_SIZE
193 #define	VM_KMEM_SIZE		(12 * 1024 * 1024)
194 #endif
195 
196 #ifdef __powerpc64__
197 #ifndef VM_KMEM_SIZE_SCALE
198 #define VM_KMEM_SIZE_SCALE      (3)
199 #endif
200 
201 #ifndef VM_KMEM_SIZE_MAX
202 #define VM_KMEM_SIZE_MAX        0x1c0000000  /* 7 GB */
203 #endif
204 #endif
205 
206 #define	ZERO_REGION_SIZE	(64 * 1024)	/* 64KB */
207 
208 #endif /* _MACHINE_VMPARAM_H_ */
209