vmparam.h revision 1.22 1 /* $NetBSD: vmparam.h,v 1.22 2016/09/03 09:07:53 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by UCHIYAMA Yasushi.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _SH3_VMPARAM_H_
33 #define _SH3_VMPARAM_H_
34
35 #include <sys/queue.h>
36
37 #define __USE_TOPDOWN_VM
38
39 /*
40 * We use 4K pages on the sh3/sh4. Override the PAGE_* definitions
41 * to be compile-time constants.
42 */
43 #define PAGE_SHIFT 12
44 #define PAGE_SIZE (1 << PAGE_SHIFT)
45 #define PAGE_MASK (PAGE_SIZE - 1)
46
47 /* Virtual address map. */
48 #define VM_MIN_ADDRESS ((vaddr_t)0)
49 #define VM_MAXUSER_ADDRESS ((vaddr_t)0x7ffff000)
50 #define VM_MAX_ADDRESS ((vaddr_t)0x7ffff000)
51 #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xc0000000)
52 #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xe0000000)
53
54 /* top of stack */
55 #define USRSTACK VM_MAXUSER_ADDRESS
56
57 /* Virtual memory resource limit. */
58 #define MAXTSIZ (64 * 1024 * 1024) /* max text size */
59 #ifndef MAXDSIZ
60 #define MAXDSIZ (512 * 1024 * 1024) /* max data size */
61 #endif
62 #ifndef MAXSSIZ
63 #define MAXSSIZ (32 * 1024 * 1024) /* max stack size */
64 #endif
65
66 /* initial data size limit */
67 #ifndef DFLDSIZ
68 #define DFLDSIZ (128 * 1024 * 1024)
69 #endif
70 /* initial stack size limit */
71 #ifndef DFLSSIZ
72 #define DFLSSIZ (2 * 1024 * 1024)
73 #endif
74
75 /* Size of user raw I/O map */
76 #ifndef USRIOSIZE
77 #define USRIOSIZE (MAXBSIZE / PAGE_SIZE * 8)
78 #endif
79
80 #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE)
81
82 /* Physical memory segments */
83 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH
84
85 #define sh3_round_page(x) ((((uint32_t)(x)) + PGOFSET) & ~PGOFSET)
86 #define sh3_trunc_page(x) ((uint32_t)(x) & ~PGOFSET)
87 #define sh3_btop(x) ((uint32_t)(x) >> PGSHIFT)
88 #define sh3_ptob(x) ((uint32_t)(x) << PGSHIFT)
89 #endif /* !_SH3_VMPARAM_H_ */
90