1 /*
2 * Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 /*
25 * Copyright (c) 2012 Intel Corporation. All rights reserved.
26 */
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 struct drm_device *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(struct drm_device * sc)64 drm_init_kstats(struct drm_device *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->devinfo);
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 (0);
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(struct drm_device * sc)93 drm_fini_kstats(struct drm_device *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