1 /* $NetBSD: rf_callback.c,v 1.16 2004/03/07 22:15:19 oster Exp $ */
2 /*
3 * Copyright (c) 1995 Carnegie-Mellon University.
4 * All rights reserved.
5 *
6 * Author: Jim Zelenka
7 *
8 * Permission to use, copy, modify and distribute this software and
9 * its documentation is hereby granted, provided that both the copyright
10 * notice and this permission notice appear in all copies of the
11 * software, derivative works or modified versions, and any portions
12 * thereof, and that both notices appear in supporting documentation.
13 *
14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
16 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
17 *
18 * Carnegie Mellon requests users of this software to return to
19 *
20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
21 * School of Computer Science
22 * Carnegie Mellon University
23 * Pittsburgh PA 15213-3890
24 *
25 * any improvements or extensions that they make and grant Carnegie the
26 * rights to redistribute these changes.
27 */
28
29 /*****************************************************************************
30 *
31 * callback.c -- code to manipulate callback descriptor
32 *
33 ****************************************************************************/
34
35
36 #include <sys/cdefs.h>
37 __KERNEL_RCSID(0, "$NetBSD: rf_callback.c,v 1.16 2004/03/07 22:15:19 oster Exp $");
38
39 #include <dev/raidframe/raidframevar.h>
40 #include <sys/pool.h>
41
42 #include "rf_archs.h"
43 #include "rf_threadstuff.h"
44 #include "rf_callback.h"
45 #include "rf_debugMem.h"
46 #include "rf_general.h"
47 #include "rf_shutdown.h"
48 #include "rf_netbsd.h"
49
50 #define RF_MAX_FREE_CALLBACK 64
51 #define RF_MIN_FREE_CALLBACK 32
52
53 static void rf_ShutdownCallback(void *);
54 static void
55 rf_ShutdownCallback(void *ignored)
56 {
57 pool_destroy(&rf_pools.callback);
58 }
59
60 int
61 rf_ConfigureCallback(listp)
62 RF_ShutdownList_t **listp;
63 {
64
65 rf_pool_init(&rf_pools.callback, sizeof(RF_CallbackDesc_t),
66 "rf_callbackpl", RF_MIN_FREE_CALLBACK, RF_MAX_FREE_CALLBACK);
67 rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL);
68
69 return (0);
70 }
71
72 RF_CallbackDesc_t *
73 rf_AllocCallbackDesc()
74 {
75 RF_CallbackDesc_t *p;
76
77 p = pool_get(&rf_pools.callback, PR_WAITOK);
78 return (p);
79 }
80
81 void
82 rf_FreeCallbackDesc(p)
83 RF_CallbackDesc_t *p;
84 {
85 pool_put(&rf_pools.callback, p);
86 }
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