src/drivers/net/ath5k/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  * Lightly modified for gPXE, July 2009, by Joshua Oreman <oremanj@rwcr.net>.
   7  *
   8  * Permission to use, copy, modify, and distribute this software for any
   9  * purpose with or without fee is hereby granted, provided that the above
  10  * copyright notice and this permission notice appear in all copies.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19  *
  20  */
  21
  22 FILE_LICENCE ( MIT );
  23
  24 /**************\
  25 * Capabilities *
  26 \**************/
  27
  28 #include "ath5k.h"
  29 #include "reg.h"
  30 #include "base.h"
  31
  32 /*
  33  * Fill the capabilities struct
  34  * TODO: Merge this with EEPROM code when we are done with it
  35  */
  36 int ath5k_hw_set_capabilities(struct ath5k_hw *ah)
  37 {
  38         u16 ee_header;
  39
  40         /* Capabilities stored in the EEPROM */
  41         ee_header = ah->ah_capabilities.cap_eeprom.ee_header;
  42
  43         if (ah->ah_version == AR5K_AR5210) {
  44                 /*
  45                  * Set radio capabilities
  46                  * (The AR5110 only supports the middle 5GHz band)
  47                  */
  48                 ah->ah_capabilities.cap_range.range_5ghz_min = 5120;
  49                 ah->ah_capabilities.cap_range.range_5ghz_max = 5430;
  50                 ah->ah_capabilities.cap_range.range_2ghz_min = 0;
  51                 ah->ah_capabilities.cap_range.range_2ghz_max = 0;
  52
  53                 /* Set supported modes */
  54                 ah->ah_capabilities.cap_mode |= AR5K_MODE_BIT_11A;
  55                 ah->ah_capabilities.cap_mode |= AR5K_MODE_BIT_11A_TURBO;
  56         } else {
  57                 /*
  58                  * XXX The tranceiver supports frequencies from 4920 to 6100GHz
  59                  * XXX and from 2312 to 2732GHz. There are problems with the
  60                  * XXX current ieee80211 implementation because the IEEE
  61                  * XXX channel mapping does not support negative channel
  62                  * XXX numbers (2312MHz is channel -19). Of course, this
  63                  * XXX doesn't matter because these channels are out of range
  64                  * XXX but some regulation domains like MKK (Japan) will
  65                  * XXX support frequencies somewhere around 4.8GHz.
  66                  */
  67
  68                 /*
  69                  * Set radio capabilities
  70                  */
  71
  72                 if (AR5K_EEPROM_HDR_11A(ee_header)) {
  73                         /* 4920 */
  74                         ah->ah_capabilities.cap_range.range_5ghz_min = 5005;
  75                         ah->ah_capabilities.cap_range.range_5ghz_max = 6100;
  76
  77                         /* Set supported modes */
  78                         ah->ah_capabilities.cap_mode |= AR5K_MODE_BIT_11A;
  79                         ah->ah_capabilities.cap_mode |= AR5K_MODE_BIT_11A_TURBO;
  80                         if (ah->ah_version == AR5K_AR5212)
  81                                 ah->ah_capabilities.cap_mode |=
  82                                         AR5K_MODE_BIT_11G_TURBO;
  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                                 ah->ah_capabilities.cap_mode |=
  96                                         AR5K_MODE_BIT_11B;
  97
  98                         if (AR5K_EEPROM_HDR_11G(ee_header) &&
  99                             ah->ah_version != AR5K_AR5211)
 100                                 ah->ah_capabilities.cap_mode |=
 101                                         AR5K_MODE_BIT_11G;
 102                 }
 103         }
 104
 105         /* GPIO */
 106         ah->ah_gpio_npins = AR5K_NUM_GPIO;
 107
 108         /* Set number of supported TX queues */
 109         ah->ah_capabilities.cap_queues.q_tx_num = 1;
 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 __unused, u32 *result)
 118 {
 119         switch (cap_type) {
 120         case AR5K_CAP_NUM_TXQUEUES:
 121                 if (result) {
 122                         *result = 1;
 123                         goto yes;
 124                 }
 125         case AR5K_CAP_VEOL:
 126                 goto yes;
 127         case AR5K_CAP_COMPRESSION:
 128                 if (ah->ah_version == AR5K_AR5212)
 129                         goto yes;
 130                 else
 131                         goto no;
 132         case AR5K_CAP_BURST:
 133                 goto yes;
 134         case AR5K_CAP_TPC:
 135                 goto yes;
 136         case AR5K_CAP_BSSIDMASK:
 137                 if (ah->ah_version == AR5K_AR5212)
 138                         goto yes;
 139                 else
 140                         goto no;
 141         case AR5K_CAP_XR:
 142                 if (ah->ah_version == AR5K_AR5212)
 143                         goto yes;
 144                 else
 145                         goto no;
 146         default:
 147                 goto no;
 148         }
 149
 150 no:
 151         return -EINVAL;
 152 yes:
 153         return 0;
 154 }