General cleanups as part of the libcaps userland threading work.
[dragonfly.git] / sys / sys / upcall.h
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1/*
2 * Copyright (c) 2003 Matthew Dillon <dillon@backplane.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
709799ea 26 * $DragonFly: src/sys/sys/upcall.h,v 1.4 2003/12/04 20:09:33 dillon Exp $
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27 */
28
29#ifndef _SYS_UPCALL_H_
30#define _SYS_UPCALL_H_
31
32typedef void (*upcall_func_t)(void *);
33
34struct upcall {
35 int magic;
36 int crit_count;
37 int pending; /* must follow crit_count */
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38};
39
40#define UPCALL_MAGIC 0x55504331
41#define UPCALL_MAXCOUNT 32
42
43#define UPC_CONTROL_DISPATCH 1
44#define UPC_CONTROL_NEXT 2
45#define UPC_CONTROL_DELETE 3
46#define UPC_CONTROL_POLL 4
47#define UPC_CONTROL_POLLANDCLEAR 5
48
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49#define UPC_CRITADD 32 /* NOTE! same as TDPRI_CRIT */
50
a722be49 51#if defined(_KERNEL)
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52/*
53 * Kernel protoypes
54 */
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55
56struct vmspace;
57
58void upc_release(struct vmspace *vm, struct proc *p);
59void postupcall(struct proc *p);
60
61#else
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62/*
63 * Userland prototypes
64 */
a722be49 65int upc_register(struct upcall *, upcall_func_t, upcall_func_t, void *);
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66int upc_control(int, int, void *);
67void upc_callused_wrapper(void *);
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68
69#endif
70
71#endif
72