1 /* $NetBSD: nouveau_nvkm_core_option.c,v 1.5 2021/12/18 23:45:34 riastradh Exp $ */
2
3 /*
4 * Copyright 2012 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_core_option.c,v 1.5 2021/12/18 23:45:34 riastradh Exp $");
28
29 #include <core/option.h>
30 #include <core/debug.h>
31
32 const char *
nvkm_stropt(const char * optstr,const char * opt,int * arglen)33 nvkm_stropt(const char *optstr, const char *opt, int *arglen)
34 {
35 while (optstr && *optstr != '\0') {
36 int len = strcspn(optstr, ",=");
37 switch (optstr[len]) {
38 case '=':
39 if (!strncasecmpz(optstr, opt, len)) {
40 optstr += len + 1;
41 *arglen = strcspn(optstr, ",=");
42 return *arglen ? optstr : NULL;
43 }
44 optstr++;
45 break;
46 case ',':
47 optstr++;
48 break;
49 default:
50 break;
51 }
52 optstr += len;
53 }
54
55 return NULL;
56 }
57
58 bool
nvkm_boolopt(const char * optstr,const char * opt,bool value)59 nvkm_boolopt(const char *optstr, const char *opt, bool value)
60 {
61 int arglen;
62
63 optstr = nvkm_stropt(optstr, opt, &arglen);
64 if (optstr) {
65 if (!strncasecmpz(optstr, "0", arglen) ||
66 !strncasecmpz(optstr, "no", arglen) ||
67 !strncasecmpz(optstr, "off", arglen) ||
68 !strncasecmpz(optstr, "false", arglen))
69 value = false;
70 else
71 if (!strncasecmpz(optstr, "1", arglen) ||
72 !strncasecmpz(optstr, "yes", arglen) ||
73 !strncasecmpz(optstr, "on", arglen) ||
74 !strncasecmpz(optstr, "true", arglen))
75 value = true;
76 }
77
78 return value;
79 }
80
81 long
nvkm_longopt(const char * optstr,const char * opt,long value)82 nvkm_longopt(const char *optstr, const char *opt, long value)
83 {
84 long result = value;
85 int arglen;
86 char *s;
87
88 optstr = nvkm_stropt(optstr, opt, &arglen);
89 if (optstr && (s = kstrndup(optstr, arglen, GFP_KERNEL))) {
90 int ret = kstrtol(s, 0, &value);
91 if (ret == 0)
92 result = value;
93 kfree(s);
94 }
95
96 return result;
97 }
98
99 int
nvkm_dbgopt(const char * optstr,const char * sub)100 nvkm_dbgopt(const char *optstr, const char *sub)
101 {
102 int mode = 1, level = CONFIG_NOUVEAU_DEBUG_DEFAULT;
103
104 while (optstr) {
105 int len = strcspn(optstr, ",=");
106 switch (optstr[len]) {
107 case '=':
108 if (strncasecmpz(optstr, sub, len))
109 mode = 0;
110 optstr++;
111 break;
112 default:
113 if (mode) {
114 if (!strncasecmpz(optstr, "fatal", len))
115 level = NV_DBG_FATAL;
116 else if (!strncasecmpz(optstr, "error", len))
117 level = NV_DBG_ERROR;
118 else if (!strncasecmpz(optstr, "warn", len))
119 level = NV_DBG_WARN;
120 else if (!strncasecmpz(optstr, "info", len))
121 level = NV_DBG_INFO;
122 else if (!strncasecmpz(optstr, "debug", len))
123 level = NV_DBG_DEBUG;
124 else if (!strncasecmpz(optstr, "trace", len))
125 level = NV_DBG_TRACE;
126 else if (!strncasecmpz(optstr, "paranoia", len))
127 level = NV_DBG_PARANOIA;
128 else if (!strncasecmpz(optstr, "spam", len))
129 level = NV_DBG_SPAM;
130 }
131
132 if (optstr[len] != '\0') {
133 optstr++;
134 mode = 1;
135 break;
136 }
137
138 return level;
139 }
140 optstr += len;
141 }
142
143 return level;
144 }
145