1/* $NetBSD: rf_callback.c,v 1.22 2009/03/15 17:17:23 cegger 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 1.22 2009/03/15 17:17:23 cegger 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
53static void rf_ShutdownCallback(void *);
54static void
55rf_ShutdownCallback(void *ignored)
56{
57 pool_destroy(&rf_pools.callback);
58}
59
60int
61rf_ConfigureCallback(RF_ShutdownList_t **listp)
62{
63
64 rf_pool_init(&rf_pools.callback, sizeof(RF_CallbackDesc_t),
65 "rf_callbackpl", RF_MIN_FREE_CALLBACK, RF_MAX_FREE_CALLBACK);
66 rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL);
67
68 return (0);
69}
70
71RF_CallbackDesc_t *
72rf_AllocCallbackDesc(void)
73{
74 RF_CallbackDesc_t *p;
75
76 p = pool_get(&rf_pools.callback, PR_WAITOK);
77 return (p);
78}
79
80void
81rf_FreeCallbackDesc(RF_CallbackDesc_t *p)
82{
83 pool_put(&rf_pools.callback, p);
84}
85