drivers/net/wireless/ath5k/regdom.c

   1 /*
   2  * Copyright (c) 2004, 2005 Reyk Floeter <reyk@vantronix.net>
   3  *
   4  * Permission to use, copy, modify, and distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 /*
  18  * Basic regulation domain extensions for the IEEE 802.11 stack
  19  */
  20
  21 #include <linux/kernel.h>
  22 #include <linux/string.h>
  23
  24 #include "regdom.h"
  25
  26 static const struct ath5k_regdommap {
  27         enum ath5k_regdom dmn;
  28         enum ath5k_regdom dmn5;
  29         enum ath5k_regdom dmn2;
  30 } r_map[] = {
  31         { DMN_DEFAULT,          DMN_DEBUG,      DMN_DEBUG },
  32         { DMN_NULL_WORLD,       DMN_NULL,       DMN_WORLD },
  33         { DMN_NULL_ETSIB,       DMN_NULL,       DMN_ETSIB },
  34         { DMN_NULL_ETSIC,       DMN_NULL,       DMN_ETSIC },
  35         { DMN_FCC1_FCCA,        DMN_FCC1,       DMN_FCCA },
  36         { DMN_FCC1_WORLD,       DMN_FCC1,       DMN_WORLD },
  37         { DMN_FCC2_FCCA,        DMN_FCC2,       DMN_FCCA },
  38         { DMN_FCC2_WORLD,       DMN_FCC2,       DMN_WORLD },
  39         { DMN_FCC2_ETSIC,       DMN_FCC2,       DMN_ETSIC },
  40         { DMN_FRANCE_NULL,      DMN_ETSI3,      DMN_ETSI3 },
  41         { DMN_FCC3_FCCA,        DMN_FCC3,       DMN_WORLD },
  42         { DMN_ETSI1_WORLD,      DMN_ETSI1,      DMN_WORLD },
  43         { DMN_ETSI3_ETSIA,      DMN_ETSI3,      DMN_WORLD },
  44         { DMN_ETSI2_WORLD,      DMN_ETSI2,      DMN_WORLD },
  45         { DMN_ETSI3_WORLD,      DMN_ETSI3,      DMN_WORLD },
  46         { DMN_ETSI4_WORLD,      DMN_ETSI4,      DMN_WORLD },
  47         { DMN_ETSI4_ETSIC,      DMN_ETSI4,      DMN_ETSIC },
  48         { DMN_ETSI5_WORLD,      DMN_ETSI5,      DMN_WORLD },
  49         { DMN_ETSI6_WORLD,      DMN_ETSI6,      DMN_WORLD },
  50         { DMN_ETSI_NULL,        DMN_ETSI1,      DMN_ETSI1 },
  51         { DMN_MKK1_MKKA,        DMN_MKK1,       DMN_MKKA },
  52         { DMN_MKK1_MKKB,        DMN_MKK1,       DMN_MKKA },
  53         { DMN_APL4_WORLD,       DMN_APL4,       DMN_WORLD },
  54         { DMN_MKK2_MKKA,        DMN_MKK2,       DMN_MKKA },
  55         { DMN_APL_NULL,         DMN_APL1,       DMN_NULL },
  56         { DMN_APL2_WORLD,       DMN_APL2,       DMN_WORLD },
  57         { DMN_APL2_APLC,        DMN_APL2,       DMN_WORLD },
  58         { DMN_APL3_WORLD,       DMN_APL3,       DMN_WORLD },
  59         { DMN_MKK1_FCCA,        DMN_MKK1,       DMN_FCCA },
  60         { DMN_APL2_APLD,        DMN_APL2,       DMN_APLD },
  61         { DMN_MKK1_MKKA1,       DMN_MKK1,       DMN_MKKA },
  62         { DMN_MKK1_MKKA2,       DMN_MKK1,       DMN_MKKA },
  63         { DMN_APL1_WORLD,       DMN_APL1,       DMN_WORLD },
  64         { DMN_APL1_FCCA,        DMN_APL1,       DMN_FCCA },
  65         { DMN_APL1_APLA,        DMN_APL1,       DMN_WORLD },
  66         { DMN_APL1_ETSIC,       DMN_APL1,       DMN_ETSIC },
  67         { DMN_APL2_ETSIC,       DMN_APL2,       DMN_ETSIC },
  68         { DMN_APL5_WORLD,       DMN_APL5,       DMN_WORLD },
  69         { DMN_WOR0_WORLD,       DMN_WORLD,      DMN_WORLD },
  70         { DMN_WOR1_WORLD,       DMN_WORLD,      DMN_WORLD },
  71         { DMN_WOR2_WORLD,       DMN_WORLD,      DMN_WORLD },
  72         { DMN_WOR3_WORLD,       DMN_WORLD,      DMN_WORLD },
  73         { DMN_WOR4_WORLD,       DMN_WORLD,      DMN_WORLD },
  74         { DMN_WOR5_ETSIC,       DMN_WORLD,      DMN_WORLD },
  75         { DMN_WOR01_WORLD,      DMN_WORLD,      DMN_WORLD },
  76         { DMN_WOR02_WORLD,      DMN_WORLD,      DMN_WORLD },
  77         { DMN_EU1_WORLD,        DMN_ETSI1,      DMN_WORLD },
  78         { DMN_WOR9_WORLD,       DMN_WORLD,      DMN_WORLD },
  79         { DMN_WORA_WORLD,       DMN_WORLD,      DMN_WORLD },
  80 };
  81
  82 enum ath5k_regdom ath5k_regdom2flag(enum ath5k_regdom dmn, u16 mhz)
  83 {
  84         unsigned int i;
  85
  86         for (i = 0; i < ARRAY_SIZE(r_map); i++) {
  87                 if (r_map[i].dmn == dmn) {
  88                         if (mhz >= 2000 && mhz <= 3000)
  89                                 return r_map[i].dmn2;
  90                         if (mhz >= IEEE80211_CHANNELS_5GHZ_MIN &&
  91                                         mhz <= IEEE80211_CHANNELS_5GHZ_MAX)
  92                                 return r_map[i].dmn5;
  93                 }
  94         }
  95
  96         return DMN_DEBUG;
  97 }
  98
  99 u16 ath5k_regdom_from_ieee(enum ath5k_regdom ieee)
 100 {
 101         u32 regdomain = (u32)ieee;
 102
 103         /*
 104          * Use the default regulation domain if the value is empty
 105          * or not supported by the net80211 regulation code.
 106          */
 107         if (ath5k_regdom2flag(regdomain, IEEE80211_CHANNELS_5GHZ_MIN) ==
 108                         DMN_DEBUG)
 109                 return (u16)AR5K_TUNE_REGDOMAIN;
 110
 111         /* It is supported, just return the value */
 112         return regdomain;
 113 }
 114
 115 enum ath5k_regdom ath5k_regdom_to_ieee(u16 regdomain)
 116 {
 117         enum ath5k_regdom ieee = (enum ath5k_regdom)regdomain;
 118
 119         return ieee;
 120 }
 121