kernel/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 "../regd.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                         /* Override 2GHz modes on SoCs that need it
  89                          * NOTE: cap_needs_2GHz_ovr gets set from
  90                          * ath_ahb_probe */
  91                         if (!caps->cap_needs_2GHz_ovr) {
  92                                 if (AR5K_EEPROM_HDR_11B(ee_header))
  93                                         __set_bit(AR5K_MODE_11B,
  94                                                         caps->cap_mode);
  95
  96                                 if (AR5K_EEPROM_HDR_11G(ee_header) &&
  97                                 ah->ah_version != AR5K_AR5211)
  98                                         __set_bit(AR5K_MODE_11G,
  99                                                         caps->cap_mode);
 100                         }
 101                 }
 102         }
 103
 104         if ((ah->ah_radio_5ghz_revision & 0xf0) == AR5K_SREV_RAD_2112)
 105                 __clear_bit(AR5K_MODE_11A, caps->cap_mode);
 106
 107         /* Set number of supported TX queues */
 108         if (ah->ah_version == AR5K_AR5210)
 109                 caps->cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES_NOQCU;
 110         else
 111                 caps->cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES;
 112
 113         /* Newer hardware has PHY error counters */
 114         if (ah->ah_mac_srev >= AR5K_SREV_AR5213A)
 115                 caps->cap_has_phyerr_counters = true;
 116         else
 117                 caps->cap_has_phyerr_counters = false;
 118
 119         /* MACs since AR5212 have MRR support */
 120         if (ah->ah_version == AR5K_AR5212)
 121                 caps->cap_has_mrr_support = true;
 122         else
 123                 caps->cap_has_mrr_support = false;
 124
 125         return 0;
 126 }
 127
 128 /*
 129  * TODO: Following functions should be part of a new function
 130  * set_capability
 131  */
 132
 133 int ath5k_hw_enable_pspoll(struct ath5k_hw *ah, u8 *bssid,
 134                 u16 assoc_id)
 135 {
 136         if (ah->ah_version == AR5K_AR5210) {
 137                 AR5K_REG_DISABLE_BITS(ah, AR5K_STA_ID1,
 138                         AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
 139                 return 0;
 140         }
 141
 142         return -EIO;
 143 }
 144
 145 int ath5k_hw_disable_pspoll(struct ath5k_hw *ah)
 146 {
 147         if (ah->ah_version == AR5K_AR5210) {
 148                 AR5K_REG_ENABLE_BITS(ah, AR5K_STA_ID1,
 149                         AR5K_STA_ID1_NO_PSPOLL | AR5K_STA_ID1_DEFAULT_ANTENNA);
 150                 return 0;
 151         }
 152
 153         return -EIO;
 154 }