1/*-
2 * Copyright (c) 2001 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Matt Thomas <matt@3am-softwre.com> of Allegro Networks, Inc.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#ifndef _POWERPC_OEA_VMPARAM_H_
31#define _POWERPC_OEA_VMPARAM_H_
32
33#include <sys/queue.h>
34
35/*
36 * Most of the definitions in this can be overridden by a machine-specific
37 * vmparam.h if required. Otherwise a port can just include this file
38 * get the right thing to happen.
39 */
40
41/*
42 * OEA processors have 4K pages. Override the PAGE_* definitions
43 * to be compile-time constants.
44 */
45#define PAGE_SHIFT 12
46#define PAGE_SIZE (1 << PAGE_SHIFT)
47#define PAGE_MASK (PAGE_SIZE - 1)
48
49#ifndef USRSTACK
50#define USRSTACK VM_MAXUSER_ADDRESS
51#endif
52
53#ifndef USRSTACK32
54#define USRSTACK32 VM_MAXUSER_ADDRESS32
55#endif
56
57#ifndef MAXTSIZ
58#define MAXTSIZ (256*1024*1024) /* maximum text size */
59#endif
60
61#ifndef MAXDSIZ
62#define MAXDSIZ (1024*1024*1024) /* maximum data size */
63#endif
64
65#ifndef MAXDSIZ32
66#define MAXDSIZ32 (1024*1024*1024) /* maximum data size */
67#endif
68
69#ifndef MAXSSIZ
70#define MAXSSIZ (32*1024*1024) /* maximum stack size */
71#endif
72
73#ifndef MAXSSIZ32
74#define MAXSSIZ32 (32*1024*1024) /* maximum stack size */
75#endif
76
77#ifndef DFLDSIZ
78#define DFLDSIZ (256*1024*1024) /* default data size */
79#endif
80
81#ifndef DFLDSIZ32
82#define DFLSSIZ32 (256*1024*1024)
83#endif
84
85#ifndef DFLSSIZ
86#define DFLSSIZ (2*1024*1024) /* default stack size */
87#endif
88
89#ifndef DFLSSIZ32
90#define DFLSSIZ32 (2*1024*1024) /* default stack size */
91#endif
92
93/*
94 * Default number of pages in the user raw I/O map.
95 */
96#ifndef USRIOSIZE
97#define USRIOSIZE 1024
98#endif
99
100/*
101 * The number of seconds for a process to be blocked before being
102 * considered very swappable.
103 */
104#ifndef MAXSLP
105#define MAXSLP 20
106#endif
107
108/*
109 * Segment handling stuff
110 */
111#define SEGMENT_LENGTH ( 0x10000000L)
112#define SEGMENT_MASK (~0x0fffffffL)
113
114/*
115 * Macros to manipulate VSIDs
116 */
117#if 0
118/*
119 * Move the SR# to the top bits to make the lower bits entirely random
120 * so to give better PTE distribution.
121 */
122#define VSID__KEYSHFT (SR_VSID_WIDTH - SR_KEY_LEN)
123#define VSID_SR_INCREMENT ((1L << VSID__KEYSHFT) - 1)
124#define VSID__HASHMASK (VSID_SR_INCREMENT - 1)
125#define VSID_MAKE(sr, hash) \
126 (( \
127 (((sr) << VSID__KEYSHFT) | ((hash) & VSID__HASMASK))
128 << SR_VSID_SHFT) & SR_VSID)
129#define VSID_TO_SR(vsid) \
130 (((vsid) & SR_VSID) >> (SR_VSID_SHFT + VSID__KEYSHFT))
131#define VSID_TO_HASH(vsid) \
132 (((vsid) & SR_VSID) >> SR_VSID_SHFT) & VSID__HASHMASK)
133#else
134#define VSID__HASHSHFT (SR_KEY_LEN)
135#define VSID_SR_INCREMENT (1L << 0)
136#define VSID__KEYMASK ((1L << VSID__HASHSHFT) - 1)
137#define VSID_MAKE(sr, hash) \
138 (( \
139 (((hash) << VSID__HASHSHFT) | ((sr) & VSID__KEYMASK)) \
140 << SR_VSID_SHFT) & SR_VSID)
141#define VSID_TO_SR(vsid) \
142 (((vsid) >> SR_VSID_SHFT) & VSID__KEYMASK)
143#define VSID_TO_HASH(vsid) \
144 (((vsid) & SR_VSID) >> (SR_VSID_SHFT + VSID__HASHSHFT))
145#endif /*0*/
146
147#ifndef _LP64
148/*
149 * Fixed segments
150 */
151#ifndef USER_SR
152#define USER_SR 12
153#endif
154#ifndef KERNEL_SR
155#define KERNEL_SR 13
156#endif
157#ifndef KERNEL2_SR
158#define KERNEL2_SR 14
159#endif
160#define KERNEL2_SEGMENT VSID_MAKE(KERNEL2_SR, KERNEL_VSIDBITS)
161#endif
162#define KERNEL_VSIDBITS 0xfffff
163#define PHYSMAP_VSIDBITS 0xffffe
164#define PHYSMAPN_SEGMENT(s) VSID_MAKE(s, PHYSMAP_VSIDBITS)
165#define KERNEL_SEGMENT VSID_MAKE(KERNEL_SR, KERNEL_VSIDBITS)
166#define KERNELN_SEGMENT(s) VSID_MAKE(s, KERNEL_VSIDBITS)
167/* XXXSL: need something here that will never be mapped */
168#define EMPTY_SEGMENT VSID_MAKE(0, 0xffffe)
169#define USER_ADDR ((void *)(USER_SR << ADDR_SR_SHFT))
170
171/*
172 * Some system constants
173 */
174#ifndef NPMAPS
175#define NPMAPS 32768 /* Number of pmaps in system */
176#endif
177
178#define VM_MIN_ADDRESS ((vaddr_t) 0)
179#define VM_MAXUSER_ADDRESS32 ((vaddr_t) (uint32_t) ~0xfffL)
180#ifdef _LP64
181#define VM_MAXUSER_ADDRESS ((vaddr_t) 1UL << 48) /* 256TB */
182#else
183#define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32
184#endif
185#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
186#ifdef _LP64
187#define VM_MIN_KERNEL_ADDRESS ((vaddr_t) 0xffffffUL << 40) /* top 1TB */
188#define VM_MAX_KERNEL_ADDRESS ((vaddr_t) -32768)
189#else
190#define VM_MIN_KERNEL_ADDRESS ((vaddr_t) (KERNEL_SR << ADDR_SR_SHFT))
191#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH)
192#endif
193
194#define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
195
196#ifndef VM_PHYS_SIZE
197#define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE)
198#endif
199
200#endif /* _POWERPC_OEA_VMPARAM_H_ */