drivers/net/wireless/ath/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         /* Capabilities stored in the EEPROM */
  38         ee_header = ah->ah_capabilities.cap_eeprom.ee_header;
  39
  40         if (ah->ah_version == AR5K_AR5210) {
  41                 /*
  42                  * Set radio capabilities
  43                  * (The AR5110 only supports the middle 5GHz band)
  44                  */
  45                 ah->ah_capabilities.cap_range.range_5ghz_min = 5120;
  46                 ah->ah_capabilities.cap_range.range_5ghz_max = 5430;
  47                 ah->ah_capabilities.cap_range.range_2ghz_min = 0;
  48                 ah->ah_capabilities.cap_range.range_2ghz_max = 0;
  49
  50                 /* Set supported modes */
  51                 __set_bit(AR5K_MODE_11A, ah->ah_capabilities.cap_mode);
  52         } else {
  53                 /*
  54                  * XXX The tranceiver supports frequencies from 4920 to 6100GHz
  55                  * XXX and from 2312 to 2732GHz. There are problems with the
  56                  * XXX current ieee80211 implementation because the IEEE
  57                  * XXX channel mapping does not support negative channel
  58                  * XXX numbers (2312MHz is channel -19). Of course, this
  59                  * XXX doesn't matter because these channels are out of range
  60                  * XXX but some regulation domains like MKK (Japan) will
  61                  * XXX support frequencies somewhere around 4.8GHz.
  62                  */
  63
  64                 /*
  65                  * Set radio capabilities
  66                  */
  67
  68                 if (AR5K_EEPROM_HDR_11A(ee_header)) {
  69                         /* 4920 */
  70                         ah->ah_capabilities.cap_range.range_5ghz_min = 5005;
  71                         ah->ah_capabilities.cap_range.range_5ghz_max = 6100;
  72
  73                         /* Set supported modes */
  74                         __set_bit(AR5K_MODE_11A,
  75                                         ah->ah_capabilities.cap_mode);
  76                 }
  77
  78                 /* Enable  802.11b if a 2GHz capable radio (2111/5112) is
  79                  * connected */
  80                 if (AR5K_EEPROM_HDR_11B(ee_header) ||
  81                     (AR5K_EEPROM_HDR_11G(ee_header) &&
  82                      ah->ah_version != AR5K_AR5211)) {
  83                         /* 2312 */
  84                         ah->ah_capabilities.cap_range.range_2ghz_min = 2412;
  85                         ah->ah_capabilities.cap_range.range_2ghz_max = 2732;
  86
  87                         if (AR5K_EEPROM_HDR_11B(ee_header))
  88                                 __set_bit(AR5K_MODE_11B,
  89                                                 ah->ah_capabilities.cap_mode);
  90
  91                         if (AR5K_EEPROM_HDR_11G(ee_header) &&
  92                             ah->ah_version != AR5K_AR5211)
  93                                 __set_bit(AR5K_MODE_11G,
  94                                                 ah->ah_capabilities.cap_mode);
  95                 }
  96         }
  97
  98         /* Set number of supported TX queues */
  99         if (ah->ah_version == AR5K_AR5210)
 100                 ah->ah_capabilities.cap_queues.q_tx_num =
 101                         AR5K_NUM_TX_QUEUES_NOQCU;
 102         else
 103                 ah->ah_capabilities.cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES;
 104
 105         /* newer hardware has PHY error counters */
 106         if (ah->ah_mac_srev >= AR5K_SREV_AR5213A)
 107                 ah->ah_capabilities.cap_has_phyerr_counters = true;
 108         else
 109                 ah->ah_capabilities.cap_has_phyerr_counters = false;
 110
 111         return 0;
 112 }
 113
 114 /* Main function used by the driver part to check caps */
 115 int ath5k_hw_get_capability(struct ath5k_hw *ah,
 116                 enum ath5k_capability_type cap_type,
 117                 u32 capability, u32 *result)
 118 {
 119         switch (cap_type) {
 120         case AR5K_CAP_NUM_TXQUEUES:
 121                 if (result) {
 122                         if (ah->ah_version == AR5K_AR5210)
 123                                 *result = AR5K_NUM_TX_QUEUES_NOQCU;
 124                         else
 125                                 *result = AR5K_NUM_TX_QUEUES;
 126                         goto yes;
 127                 }
 128         case AR5K_CAP_VEOL:
 129                 goto yes;
 130         case AR5K_CAP_COMPRESSION:
 131                 if (ah->ah_version == AR5K_AR5212)
 132                         goto yes;
 133                 else
 134                         goto no;
 135         case AR5K_CAP_BURST:
 136                 goto yes;
 137         case AR5K_CAP_TPC:
 138                 goto yes;
 139         case AR5K_CAP_BSSIDMASK:
 140                 if (ah->ah_version == AR5K_AR5212)
 141                         goto yes;
 142                 else
 143                         goto no;
 144         case AR5K_CAP_XR:
 145                 if (ah->ah_version == AR5K_AR5212)
 146                         goto yes;
 147                 else
 148                         goto no;
 149         default:
 150                 goto no;
 151         }
 152
 153 no:
 154         return -EINVAL;
 155 yes:
 156         return 0;
 157 }
 158
 159 /*
 160  * TODO: Following functions should be part of a new function
 161  * set_capability
 162  */
 163
 164 int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid,
 165                 u16 assoc_id)
 166 {
 167         if (ah->ah_version == AR5K_AR5210) {
 168                 AR5K_REG_DISABLE_BITS(ah, AR5K_STA_ID1,
 169                         AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
 170                 return 0;
 171         }
 172
 173         return -EIO;
 174 }
 175
 176 int ath5k_hw_disable_pspoll(struct ath5k_hw *ah)
 177 {
 178         if (ah->ah_version == AR5K_AR5210) {
 179                 AR5K_REG_ENABLE_BITS(ah, AR5K_STA_ID1,
 180                         AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
 181                 return 0;
 182         }
 183
 184         return -EIO;
 185 }