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         struct ath5k_capabilities *caps = &ah->ah_capabilities;
  36         u16 ee_header;
  37
  38         /* Capabilities stored in the EEPROM */
  39         ee_header = caps->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                 caps->cap_range.range_5ghz_min = 5120;
  47                 caps->cap_range.range_5ghz_max = 5430;
  48                 caps->cap_range.range_2ghz_min = 0;
  49                 caps->cap_range.range_2ghz_max = 0;
  50
  51                 /* Set supported modes */
  52                 __set_bit(AR5K_MODE_11A, caps->cap_mode);
  53         } else {
  54                 /*
  55                  * XXX The transceiver supports frequencies from 4920 to 6100MHz
  56                  * XXX and from 2312 to 2732MHz. There are problems with the
  57                  * XXX current ieee80211 implementation because the IEEE
  58                  * XXX channel mapping does not support negative channel
  59                  * XXX numbers (2312MHz is channel -19). Of course, this
  60                  * XXX doesn't matter because these channels are out of the
  61                  * XXX legal range.
  62                  */
  63
  64                 /*
  65                  * Set radio capabilities
  66                  */
  67
  68                 if (AR5K_EEPROM_HDR_11A(ee_header)) {
  69                         if (ath_is_49ghz_allowed(caps->cap_eeprom.ee_regdomain))
  70                                 caps->cap_range.range_5ghz_min = 4920;
  71                         else
  72                                 caps->cap_range.range_5ghz_min = 5005;
  73                         caps->cap_range.range_5ghz_max = 6100;
  74
  75                         /* Set supported modes */
  76                         __set_bit(AR5K_MODE_11A, caps->cap_mode);
  77                 }
  78
  79                 /* Enable  802.11b if a 2GHz capable radio (2111/5112) is
  80                  * connected */
  81                 if (AR5K_EEPROM_HDR_11B(ee_header) ||
  82                     (AR5K_EEPROM_HDR_11G(ee_header) &&
  83                      ah->ah_version != AR5K_AR5211)) {
  84                         /* 2312 */
  85                         caps->cap_range.range_2ghz_min = 2412;
  86                         caps->cap_range.range_2ghz_max = 2732;
  87
  88                         if (AR5K_EEPROM_HDR_11B(ee_header))
  89                                 __set_bit(AR5K_MODE_11B, caps->cap_mode);
  90
  91                         if (AR5K_EEPROM_HDR_11G(ee_header) &&
  92                             ah->ah_version != AR5K_AR5211)
  93                                 __set_bit(AR5K_MODE_11G, caps->cap_mode);
  94                 }
  95         }
  96
  97         if ((ah->ah_radio_5ghz_revision & 0xf0) == AR5K_SREV_RAD_2112)
  98                 __clear_bit(AR5K_MODE_11A, caps->cap_mode);
  99
 100         /* Set number of supported TX queues */
 101         if (ah->ah_version == AR5K_AR5210)
 102                 caps->cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES_NOQCU;
 103         else
 104                 caps->cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES;
 105
 106         /* newer hardware has PHY error counters */
 107         if (ah->ah_mac_srev >= AR5K_SREV_AR5213A)
 108                 caps->cap_has_phyerr_counters = true;
 109         else
 110                 caps->cap_has_phyerr_counters = false;
 111
 112         return 0;
 113 }
 114
 115 /* Main function used by the driver part to check caps */
 116 int ath5k_hw_get_capability(struct ath5k_hw *ah,
 117                 enum ath5k_capability_type cap_type,
 118                 u32 capability, u32 *result)
 119 {
 120         switch (cap_type) {
 121         case AR5K_CAP_NUM_TXQUEUES:
 122                 if (result) {
 123                         if (ah->ah_version == AR5K_AR5210)
 124                                 *result = AR5K_NUM_TX_QUEUES_NOQCU;
 125                         else
 126                                 *result = AR5K_NUM_TX_QUEUES;
 127                         goto yes;
 128                 }
 129         case AR5K_CAP_VEOL:
 130                 goto yes;
 131         case AR5K_CAP_COMPRESSION:
 132                 if (ah->ah_version == AR5K_AR5212)
 133                         goto yes;
 134                 else
 135                         goto no;
 136         case AR5K_CAP_BURST:
 137                 goto yes;
 138         case AR5K_CAP_TPC:
 139                 goto yes;
 140         case AR5K_CAP_BSSIDMASK:
 141                 if (ah->ah_version == AR5K_AR5212)
 142                         goto yes;
 143                 else
 144                         goto no;
 145         case AR5K_CAP_XR:
 146                 if (ah->ah_version == AR5K_AR5212)
 147                         goto yes;
 148                 else
 149                         goto no;
 150         default:
 151                 goto no;
 152         }
 153
 154 no:
 155         return -EINVAL;
 156 yes:
 157         return 0;
 158 }
 159
 160 /*
 161  * TODO: Following functions should be part of a new function
 162  * set_capability
 163  */
 164
 165 int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid,
 166                 u16 assoc_id)
 167 {
 168         if (ah->ah_version == AR5K_AR5210) {
 169                 AR5K_REG_DISABLE_BITS(ah, AR5K_STA_ID1,
 170                         AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
 171                 return 0;
 172         }
 173
 174         return -EIO;
 175 }
 176
 177 int ath5k_hw_disable_pspoll(struct ath5k_hw *ah)
 178 {
 179         if (ah->ah_version == AR5K_AR5210) {
 180                 AR5K_REG_ENABLE_BITS(ah, AR5K_STA_ID1,
 181                         AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
 182                 return 0;
 183         }
 184
 185         return -EIO;
 186 }