FreeBSD/Linux Kernel Cross Reference
sys/sys/ras.h
1 /* $NetBSD: ras.h,v 1.3 2004/03/03 21:05:30 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2002, 2004 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Gregory McGarry.
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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #ifndef _SYS_RAS_H_
40 #define _SYS_RAS_H_
41
42 #include <sys/types.h>
43 #include <sys/queue.h>
44
45 struct ras {
46 LIST_ENTRY(ras) ras_list;
47 caddr_t ras_startaddr;
48 caddr_t ras_endaddr;
49 int ras_hits;
50 };
51
52 #define RAS_INSTALL 0
53 #define RAS_PURGE 1
54 #define RAS_PURGE_ALL 2
55
56 #ifdef _KERNEL
57
58 struct pool;
59 struct proc;
60
61 caddr_t ras_lookup(struct proc *, caddr_t);
62
63 int ras_fork(struct proc *, struct proc *);
64 int ras_purgeall(struct proc *);
65
66 extern struct pool ras_pool;
67
68 #else
69
70 #define RAS_DECL(name) \
71 extern void __CONCAT(name,_ras_start(void)), __CONCAT(name,_ras_end(void))
72
73 /*
74 * RAS_START and RAS_END contain implicit instruction reordering
75 * barriers. See __insn_barrier() in <sys/cdefs.h>.
76 */
77 #define RAS_START(name) \
78 __asm __volatile(".globl " ___STRING(name) "_ras_start\n" \
79 ___STRING(name) "_ras_start:" \
80 ::: "memory")
81
82 #define RAS_END(name) \
83 __asm __volatile(".globl " ___STRING(name) "_ras_end\n" \
84 ___STRING(name) "_ras_end:" \
85 ::: "memory")
86
87 #define RAS_ADDR(name) (void *) __CONCAT(name,_ras_start)
88 #define RAS_SIZE(name) ((size_t)((uintptr_t) __CONCAT(name,_ras_end) - \
89 (uintptr_t) __CONCAT(name,_ras_start)))
90
91 __BEGIN_DECLS
92 int rasctl(caddr_t, size_t, int);
93 __END_DECLS
94
95 #endif /* _KERNEL */
96
97 #endif /* !_SYS_RAS_H_ */
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