1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright 2008 Sun Microsystems, Inc.
23 * All rights reserved. Use is subject to license terms.
24 */
25
26 #pragma ident "%Z%%M% %I% %E% SMI"
27
28 #include "drmP.h"
29 #include <sys/kstat.h>
30 #include <sys/ddi.h>
31 #include <sys/sunddi.h>
32 #include <sys/sunldi.h>
33
34 static char *drmkstat_name[] = {
35 "opens",
36 "closes",
37 "IOCTLs",
38 "locks",
39 "unlocks",
40 NULL
41 };
42
43 static int
drm_kstat_update(kstat_t * ksp,int flag)44 drm_kstat_update(kstat_t *ksp, int flag)
45 {
46 drm_device_t *sc;
47 kstat_named_t *knp;
48 int tmp;
49
50 if (flag != KSTAT_READ)
51 return (EACCES);
52
53 sc = ksp->ks_private;
54 knp = ksp->ks_data;
55
56 for (tmp = 1; tmp < 6; tmp++) {
57 (knp++)->value.ui32 = sc->counts[tmp];
58 }
59
60 return (0);
61 }
62
63 int
drm_init_kstats(drm_device_t * sc)64 drm_init_kstats(drm_device_t *sc)
65 {
66 int instance;
67 kstat_t *ksp;
68 kstat_named_t *knp;
69 char *np;
70 char **aknp;
71
72 instance = ddi_get_instance(sc->dip);
73 aknp = drmkstat_name;
74 ksp = kstat_create("drm", instance, "drminfo", "drm",
75 KSTAT_TYPE_NAMED, sizeof (drmkstat_name)/sizeof (char *) - 1,
76 KSTAT_FLAG_PERSISTENT);
77 if (ksp == NULL)
78 return (NULL);
79
80 ksp->ks_private = sc;
81 ksp->ks_update = drm_kstat_update;
82 for (knp = ksp->ks_data; (np = (*aknp)) != NULL; knp++, aknp++) {
83 kstat_named_init(knp, np, KSTAT_DATA_UINT32);
84 }
85 kstat_install(ksp);
86
87 sc->asoft_ksp = ksp;
88
89 return (0);
90 }
91
92 void
drm_fini_kstats(drm_device_t * sc)93 drm_fini_kstats(drm_device_t *sc)
94 {
95 if (sc->asoft_ksp)
96 kstat_delete(sc->asoft_ksp);
97 else
98 cmn_err(CE_WARN, "attempt to delete null kstat");
99 }
100