drivers/net/wireless/ath5k/caps.c

   1 /*
   2  * Copyright (c) 2004-2008 Reyk Floeter <reyk@openbsd.org>
   3  * Copyright (c) 2006-2008 Nick Kossifidis <mickflemm@gmail.com>
   4  * Copyright (c) 2007-2008 Jiri Slaby <jirislaby@gmail.com>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  15  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  16  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  *
  18  */
  19
  20 /**************\
  21 * Capabilities *
  22 \**************/
  23
  24 #include "ath5k.h"
  25 #include "reg.h"
  26 #include "debug.h"
  27 #include "base.h"
  28
  29 /*
  30  * Fill the capabilities struct
  31  * TODO: Merge this with EEPROM code when we are done with it
  32  */
  33 int ath5k_hw_set_capabilities(struct ath5k_hw *ah)
  34 {
  35         u16 ee_header;
  36
  37         ATH5K_TRACE(ah->ah_sc);
  38         /* Capabilities stored in the EEPROM */
  39         ee_header = ah->ah_capabilities.cap_eeprom.ee_header;
  40
  41         if (ah->ah_version == AR5K_AR5210) {
  42                 /*
  43                  * Set radio capabilities
  44                  * (The AR5110 only supports the middle 5GHz band)
  45                  */
  46                 ah->ah_capabilities.cap_range.range_5ghz_min = 5120;
  47                 ah->ah_capabilities.cap_range.range_5ghz_max = 5430;
  48                 ah->ah_capabilities.cap_range.range_2ghz_min = 0;
  49                 ah->ah_capabilities.cap_range.range_2ghz_max = 0;
  50
  51                 /* Set supported modes */
  52                 __set_bit(AR5K_MODE_11A, ah->ah_capabilities.cap_mode);
  53                 __set_bit(AR5K_MODE_11A_TURBO, ah->ah_capabilities.cap_mode);
  54         } else {
  55                 /*
  56                  * XXX The tranceiver supports frequencies from 4920 to 6100GHz
  57                  * XXX and from 2312 to 2732GHz. There are problems with the
  58                  * XXX current ieee80211 implementation because the IEEE
  59                  * XXX channel mapping does not support negative channel
  60                  * XXX numbers (2312MHz is channel -19). Of course, this
  61                  * XXX doesn't matter because these channels are out of range
  62                  * XXX but some regulation domains like MKK (Japan) will
  63                  * XXX support frequencies somewhere around 4.8GHz.
  64                  */
  65
  66                 /*
  67                  * Set radio capabilities
  68                  */
  69
  70                 if (AR5K_EEPROM_HDR_11A(ee_header)) {
  71                         /* 4920 */
  72                         ah->ah_capabilities.cap_range.range_5ghz_min = 5005;
  73                         ah->ah_capabilities.cap_range.range_5ghz_max = 6100;
  74
  75                         /* Set supported modes */
  76                         __set_bit(AR5K_MODE_11A,
  77                                         ah->ah_capabilities.cap_mode);
  78                         __set_bit(AR5K_MODE_11A_TURBO,
  79                                         ah->ah_capabilities.cap_mode);
  80                         if (ah->ah_version == AR5K_AR5212)
  81                                 __set_bit(AR5K_MODE_11G_TURBO,
  82                                                 ah->ah_capabilities.cap_mode);
  83                 }
  84
  85                 /* Enable  802.11b if a 2GHz capable radio (2111/5112) is
  86                  * connected */
  87                 if (AR5K_EEPROM_HDR_11B(ee_header) ||
  88                     (AR5K_EEPROM_HDR_11G(ee_header) &&
  89                      ah->ah_version != AR5K_AR5211)) {
  90                         /* 2312 */
  91                         ah->ah_capabilities.cap_range.range_2ghz_min = 2412;
  92                         ah->ah_capabilities.cap_range.range_2ghz_max = 2732;
  93
  94                         if (AR5K_EEPROM_HDR_11B(ee_header))
  95                                 __set_bit(AR5K_MODE_11B,
  96                                                 ah->ah_capabilities.cap_mode);
  97
  98                         if (AR5K_EEPROM_HDR_11G(ee_header) &&
  99                             ah->ah_version != AR5K_AR5211)
 100                                 __set_bit(AR5K_MODE_11G,
 101                                                 ah->ah_capabilities.cap_mode);
 102                 }
 103         }
 104
 105         /* GPIO */
 106         ah->ah_gpio_npins = AR5K_NUM_GPIO;
 107
 108         /* Set number of supported TX queues */
 109         if (ah->ah_version == AR5K_AR5210)
 110                 ah->ah_capabilities.cap_queues.q_tx_num =
 111                         AR5K_NUM_TX_QUEUES_NOQCU;
 112         else
 113                 ah->ah_capabilities.cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES;
 114
 115         return 0;
 116 }
 117
 118 /* Main function used by the driver part to check caps */
 119 int ath5k_hw_get_capability(struct ath5k_hw *ah,
 120                 enum ath5k_capability_type cap_type,
 121                 u32 capability, u32 *result)
 122 {
 123         ATH5K_TRACE(ah->ah_sc);
 124
 125         switch (cap_type) {
 126         case AR5K_CAP_NUM_TXQUEUES:
 127                 if (result) {
 128                         if (ah->ah_version == AR5K_AR5210)
 129                                 *result = AR5K_NUM_TX_QUEUES_NOQCU;
 130                         else
 131                                 *result = AR5K_NUM_TX_QUEUES;
 132                         goto yes;
 133                 }
 134         case AR5K_CAP_VEOL:
 135                 goto yes;
 136         case AR5K_CAP_COMPRESSION:
 137                 if (ah->ah_version == AR5K_AR5212)
 138                         goto yes;
 139                 else
 140                         goto no;
 141         case AR5K_CAP_BURST:
 142                 goto yes;
 143         case AR5K_CAP_TPC:
 144                 goto yes;
 145         case AR5K_CAP_BSSIDMASK:
 146                 if (ah->ah_version == AR5K_AR5212)
 147                         goto yes;
 148                 else
 149                         goto no;
 150         case AR5K_CAP_XR:
 151                 if (ah->ah_version == AR5K_AR5212)
 152                         goto yes;
 153                 else
 154                         goto no;
 155         default:
 156                 goto no;
 157         }
 158
 159 no:
 160         return -EINVAL;
 161 yes:
 162         return 0;
 163 }
 164
 165 /*
 166  * TODO: Following functions should be part of a new function
 167  * set_capability
 168  */
 169
 170 int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid,
 171                 u16 assoc_id)
 172 {
 173         ATH5K_TRACE(ah->ah_sc);
 174
 175         if (ah->ah_version == AR5K_AR5210) {
 176                 AR5K_REG_DISABLE_BITS(ah, AR5K_STA_ID1,
 177                         AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
 178                 return 0;
 179         }
 180
 181         return -EIO;
 182 }
 183
 184 int ath5k_hw_disable_pspoll(struct ath5k_hw *ah)
 185 {
 186         ATH5K_TRACE(ah->ah_sc);
 187
 188         if (ah->ah_version == AR5K_AR5210) {
 189                 AR5K_REG_ENABLE_BITS(ah, AR5K_STA_ID1,
 190                         AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
 191                 return 0;
 192         }
 193
 194         return -EIO;
 195 }