Annotation of sys/arch/hppa/include/vmparam.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: vmparam.h,v 1.33 2006/06/04 17:21:24 miod Exp $ */
2:
3: /*
4: * Copyright (c) 1988-1994, The University of Utah and
5: * the Computer Systems Laboratory at the University of Utah (CSL).
6: * All rights reserved.
7: *
8: * Permission to use, copy, modify and distribute this software is hereby
9: * granted provided that (1) source code retains these copyright, permission,
10: * and disclaimer notices, and (2) redistributions including binaries
11: * reproduce the notices in supporting documentation, and (3) all advertising
12: * materials mentioning features or use of this software display the following
13: * acknowledgement: ``This product includes software developed by the
14: * Computer Systems Laboratory at the University of Utah.''
15: *
16: * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
17: * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
18: * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
19: *
20: * CSL requests users of this software to return to csl-dist@cs.utah.edu any
21: * improvements that they make and grant CSL redistribution rights.
22: *
23: * Utah $Hdr: vmparam.h 1.16 94/12/16$
24: */
25:
26: #ifndef _MACHINE_VMPARAM_H_
27: #define _MACHINE_VMPARAM_H_
28:
29: /*
30: * Machine dependent constants for HP PA
31: */
32: /*
33: * USRTEXT is the start of the user text/data space, while USRSTACK
34: * is the bottm (start) of the user stack.
35: */
36: #define USRTEXT PAGE_SIZE /* Start of user .text */
37: #define USRSTACK 0x78000000UL /* Start of user stack */
38: #define SYSCALLGATE 0xC0000000 /* syscall gateway page */
39:
40: /*
41: * Virtual memory related constants, all in bytes
42: */
43: #ifndef MAXTSIZ
44: #define MAXTSIZ (512*1024*1024UL) /* max text size */
45: #endif
46: #ifndef DFLDSIZ
47: #define DFLDSIZ (16*1024*1024) /* initial data size limit */
48: #endif
49: #ifndef MAXDSIZ
50: #define MAXDSIZ (1*1024*1024*1024UL) /* max data size */
51: #endif
52: #ifndef DFLSSIZ
53: #define DFLSSIZ (2*1024*1024) /* initial stack size limit */
54: #endif
55: #ifndef MAXSSIZ
56: #define MAXSSIZ (128*1024*1024UL) /* max stack size */
57: #endif
58:
59: #define STACKGAP_RANDOM 256*1024
60:
61: #ifndef USRIOSIZE
62: #define USRIOSIZE ((2*HPPA_PGALIAS)/PAGE_SIZE) /* 2mb */
63: #endif
64:
65: /*
66: * PTEs for system V style shared memory.
67: * This is basically slop for kmempt which we actually allocate (malloc) from.
68: */
69: #ifndef SHMMAXPGS
70: #define SHMMAXPGS 8192 /* 32mb */
71: #endif
72:
73: /* user/kernel map constants */
74: #define VM_MIN_ADDRESS ((vaddr_t)0)
75: #define VM_MAXUSER_ADDRESS ((vaddr_t)0xc0000000)
76: #define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
77: #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xc0001000)
78: #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xef000000)
79:
80: /* virtual sizes (bytes) for various kernel submaps */
81: #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
82:
83: #define VM_PHYSSEG_MAX 1 /* this many physmem segments */
84: #define VM_PHYSSEG_STRAT VM_PSTRAT_RANDOM
85:
86: #define VM_PHYSSEG_NOADD /* XXX until uvm code is fixed */
87:
88: #define VM_NFREELIST 2
89: #define VM_FREELIST_DEFAULT 0
90: #define VM_FREELIST_ARCH 1
91:
92: #if defined(_KERNEL) && !defined(_LOCORE)
93: #define __HAVE_VM_PAGE_MD
94: struct pv_entry;
95: struct vm_page_md {
96: struct simplelock pvh_lock; /* locks every pv on this list */
97: struct pv_entry *pvh_list; /* head of list (locked by pvh_lock) */
98: u_int pvh_attrs; /* to preserve ref/mod */
99: };
100:
101: #define VM_MDPAGE_INIT(pg) do { \
102: simple_lock_init(&(pg)->mdpage.pvh_lock); \
103: (pg)->mdpage.pvh_list = NULL; \
104: (pg)->mdpage.pvh_attrs = 0; \
105: } while (0)
106: #endif
107:
108: #endif /* _MACHINE_VMPARAM_H_ */
109:
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