2 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
3 * Copyright (C) 1995, 1996 TooLs GmbH.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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.
31 * $NetBSD: vmparam.h,v 1.11 2000/02/11 19:25:16 thorpej Exp $
35 #ifndef _MACHINE_VMPARAM_H_
36 #define _MACHINE_VMPARAM_H_
38 #define USRSTACK VM_MAXUSER_ADDRESS
41 #define MAXTSIZ (64*1024*1024) /* max text size */
45 #define DFLDSIZ (128*1024*1024) /* default data size */
49 #define MAXDSIZ (1*1024*1024*1024) /* max data size */
53 #define DFLSSIZ (8*1024*1024) /* default stack size */
57 #define MAXSSIZ (64*1024*1024) /* max stack size */
61 * Would like to have MAX addresses = 0, but this doesn't (currently) work
65 #define VM_MIN_ADDRESS (0x0000000000000000UL)
66 #define VM_MAXUSER_ADDRESS (0x7ffffffffffff000UL)
67 #define VM_MAX_ADDRESS (0xffffffffffffffffUL)
69 #define VM_MIN_ADDRESS ((vm_offset_t)0)
70 #define VM_MAXUSER_ADDRESS ((vm_offset_t)0x7ffff000)
71 #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
75 #define VM_MIN_ADDRESS 0
76 #define VM_MAXUSER_ADDRESS 0x7ffff000
80 #define FREEBSD32_USRSTACK 0x7ffff000
84 #define KERNBASE 0x00100000UL /* start of kernel virtual */
87 #define VM_MIN_KERNEL_ADDRESS 0xc000000000000000UL
88 #define VM_MAX_KERNEL_ADDRESS 0xc0000001c7ffffffUL
89 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS
91 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT)
92 #define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1)
93 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1)
97 * Use the direct-mapped BAT registers for UMA small allocs. This
98 * takes pressure off the small amount of available KVA.
100 #define UMA_MD_SMALL_ALLOC
105 * Kernel CCSRBAR location. We make this the reset location.
107 #define CCSRBAR_VA 0xfef00000
108 #define CCSRBAR_SIZE 0x00100000
110 #define KERNBASE 0xc0000000 /* start of kernel virtual */
112 #define VM_MIN_KERNEL_ADDRESS KERNBASE
113 #define VM_MAX_KERNEL_ADDRESS 0xf8000000
115 #endif /* AIM/E500 */
117 /* XXX max. amount of KVM to be used by buffers. */
118 #ifndef VM_MAX_KERNEL_BUF
119 #define VM_MAX_KERNEL_BUF (SEGMENT_LENGTH * 7 / 10)
123 struct pmap_physseg {
124 struct pv_entry *pvent;
129 #define VM_PHYSSEG_MAX 16 /* 1? */
132 * The physical address space is densely populated on 32-bit systems,
133 * but may not be on 64-bit ones.
136 #define VM_PHYSSEG_SPARSE
138 #define VM_PHYSSEG_DENSE
142 * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool
143 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is
144 * the pool from which physical pages for small UMA objects are
147 #define VM_NFREEPOOL 3
148 #define VM_FREEPOOL_CACHE 2
149 #define VM_FREEPOOL_DEFAULT 0
150 #define VM_FREEPOOL_DIRECT 1
153 * Create one free page list.
155 #define VM_NFREELIST 1
156 #define VM_FREELIST_DEFAULT 0
159 * The largest allocation size is 4MB.
161 #define VM_NFREEORDER 11
164 * Only one memory domain.
171 * Disable superpage reservations.
173 #ifndef VM_NRESERVLEVEL
174 #define VM_NRESERVLEVEL 0
177 #ifndef VM_INITIAL_PAGEIN
178 #define VM_INITIAL_PAGEIN 16
182 #define SGROWSIZ (128UL*1024) /* amount to grow stack */
186 #define VM_KMEM_SIZE (12 * 1024 * 1024)
190 #ifndef VM_KMEM_SIZE_SCALE
191 #define VM_KMEM_SIZE_SCALE (3)
194 #ifndef VM_KMEM_SIZE_MAX
195 #define VM_KMEM_SIZE_MAX 0x1c0000000 /* 7 GB */
199 #endif /* _MACHINE_VMPARAM_H_ */