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 32const char * 33nvkm_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 58bool 59nvkm_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 81long 82nvkm_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 99int 100nvkm_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