Pileus Git - ~andy/linux/blob - drivers/gpu/drm/nouveau/core/core/option.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   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 shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24
  25 #include <core/option.h>
  26 #include <core/debug.h>
  27
  28 const char *
  29 nouveau_stropt(const char *optstr, const char *opt, int *arglen)
  30 {
  31         while (optstr && *optstr != '\0') {
  32                 int len = strcspn(optstr, ",=");
  33                 switch (optstr[len]) {
  34                 case '=':
  35                         if (!strncasecmpz(optstr, opt, len)) {
  36                                 optstr += len + 1;
  37                                 *arglen = strcspn(optstr, ",=");
  38                                 return *arglen ? optstr : NULL;
  39                         }
  40                         optstr++;
  41                         break;
  42                 case ',':
  43                         optstr++;
  44                         break;
  45                 default:
  46                         break;
  47                 }
  48                 optstr += len;
  49         }
  50
  51         return NULL;
  52 }
  53
  54 bool
  55 nouveau_boolopt(const char *optstr, const char *opt, bool value)
  56 {
  57         int arglen;
  58
  59         optstr = nouveau_stropt(optstr, opt, &arglen);
  60         if (optstr) {
  61                 if (!strncasecmpz(optstr, "0", arglen) ||
  62                     !strncasecmpz(optstr, "no", arglen) ||
  63                     !strncasecmpz(optstr, "off", arglen) ||
  64                     !strncasecmpz(optstr, "false", arglen))
  65                         value = false;
  66                 else
  67                 if (!strncasecmpz(optstr, "1", arglen) ||
  68                     !strncasecmpz(optstr, "yes", arglen) ||
  69                     !strncasecmpz(optstr, "on", arglen) ||
  70                     !strncasecmpz(optstr, "true", arglen))
  71                         value = true;
  72         }
  73
  74         return value;
  75 }
  76
  77 int
  78 nouveau_dbgopt(const char *optstr, const char *sub)
  79 {
  80         int mode = 1, level = CONFIG_NOUVEAU_DEBUG_DEFAULT;
  81
  82         while (optstr) {
  83                 int len = strcspn(optstr, ",=");
  84                 switch (optstr[len]) {
  85                 case '=':
  86                         if (strncasecmpz(optstr, sub, len))
  87                                 mode = 0;
  88                         optstr++;
  89                         break;
  90                 default:
  91                         if (mode) {
  92                                 if (!strncasecmpz(optstr, "fatal", len))
  93                                         level = NV_DBG_FATAL;
  94                                 else if (!strncasecmpz(optstr, "error", len))
  95                                         level = NV_DBG_ERROR;
  96                                 else if (!strncasecmpz(optstr, "warn", len))
  97                                         level = NV_DBG_WARN;
  98                                 else if (!strncasecmpz(optstr, "info", len))
  99                                         level = NV_DBG_INFO_NORMAL;
 100                                 else if (!strncasecmpz(optstr, "debug", len))
 101                                         level = NV_DBG_DEBUG;
 102                                 else if (!strncasecmpz(optstr, "trace", len))
 103                                         level = NV_DBG_TRACE;
 104                                 else if (!strncasecmpz(optstr, "paranoia", len))
 105                                         level = NV_DBG_PARANOIA;
 106                                 else if (!strncasecmpz(optstr, "spam", len))
 107                                         level = NV_DBG_SPAM;
 108                         }
 109
 110                         if (optstr[len] != '\0') {
 111                                 optstr++;
 112                                 mode = 1;
 113                                 break;
 114                         }
 115
 116                         return level;
 117                 }
 118                 optstr += len;
 119         }
 120
 121         return level;
 122 }