2 * Copyright (c) 2003 Matthew Dillon <dillon@backplane.com>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $DragonFly: src/sys/sys/upcall.h,v 1.7 2003/12/07 04:20:38 dillon Exp $
29 #ifndef _SYS_UPCALL_H_
30 #define _SYS_UPCALL_H_
32 typedef void (*upcall_func_t)(void *);
36 int upc_critoff; /* offset of crit_count in uthread */
37 int upc_pending; /* must follow crit_count */
38 struct thread *upc_uthread; /* pointer to user thread (opaque) */
41 #define UPCALL_MAGIC 0x55504331
42 #define UPCALL_MAXCOUNT 32
44 #define UPC_CONTROL_DISPATCH 1
45 #define UPC_CONTROL_NEXT 2
46 #define UPC_CONTROL_DELETE 3
47 #define UPC_CONTROL_POLL 4
48 #define UPC_CONTROL_POLLANDCLEAR 5
49 #define UPC_CONTROL_WAIT 6
51 #define UPC_CRITADD 32 /* NOTE! same as TDPRI_CRIT */
60 void upc_release(struct vmspace *vm, struct proc *p);
61 void postupcall(struct proc *p);
67 int upc_register(struct upcall *, upcall_func_t, upcall_func_t, void *);
68 int upc_control(int, int, void *);
69 void upc_callused_wrapper(void *);