drivers/net/wireless/ath/ar9170/ar9170.h

   1 /*
   2  * Atheros AR9170 driver
   3  *
   4  * Driver specific definitions
   5  *
   6  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; see the file COPYING.  If not, see
  20  * http://www.gnu.org/licenses/.
  21  *
  22  * This file incorporates work covered by the following copyright and
  23  * permission notice:
  24  *    Copyright (c) 2007-2008 Atheros Communications, Inc.
  25  *
  26  *    Permission to use, copy, modify, and/or distribute this software for any
  27  *    purpose with or without fee is hereby granted, provided that the above
  28  *    copyright notice and this permission notice appear in all copies.
  29  *
  30  *    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  31  *    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  32  *    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  33  *    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  34  *    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  35  *    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  36  *    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  37  */
  38 #ifndef __AR9170_H
  39 #define __AR9170_H
  40
  41 #include <linux/completion.h>
  42 #include <linux/spinlock.h>
  43 #include <net/cfg80211.h>
  44 #include <net/mac80211.h>
  45 #ifdef CONFIG_AR9170_LEDS
  46 #include <linux/leds.h>
  47 #endif /* CONFIG_AR9170_LEDS */
  48 #include "eeprom.h"
  49 #include "hw.h"
  50
  51 #include "../regd.h"
  52
  53 #define PAYLOAD_MAX     (AR9170_MAX_CMD_LEN/4 - 1)
  54
  55 enum ar9170_bw {
  56         AR9170_BW_20,
  57         AR9170_BW_40_BELOW,
  58         AR9170_BW_40_ABOVE,
  59
  60         __AR9170_NUM_BW,
  61 };
  62
  63 static inline enum ar9170_bw nl80211_to_ar9170(enum nl80211_channel_type type)
  64 {
  65         switch (type) {
  66         case NL80211_CHAN_NO_HT:
  67         case NL80211_CHAN_HT20:
  68                 return AR9170_BW_20;
  69         case NL80211_CHAN_HT40MINUS:
  70                 return AR9170_BW_40_BELOW;
  71         case NL80211_CHAN_HT40PLUS:
  72                 return AR9170_BW_40_ABOVE;
  73         default:
  74                 BUG();
  75         }
  76 }
  77
  78 enum ar9170_rf_init_mode {
  79         AR9170_RFI_NONE,
  80         AR9170_RFI_WARM,
  81         AR9170_RFI_COLD,
  82 };
  83
  84 #define AR9170_MAX_RX_BUFFER_SIZE               8192
  85
  86 #ifdef CONFIG_AR9170_LEDS
  87 struct ar9170;
  88
  89 struct ar9170_led {
  90         struct ar9170 *ar;
  91         struct led_classdev l;
  92         char name[32];
  93         unsigned int toggled;
  94         bool last_state;
  95         bool registered;
  96 };
  97
  98 #endif /* CONFIG_AR9170_LEDS */
  99
 100 enum ar9170_device_state {
 101         AR9170_UNKNOWN_STATE,
 102         AR9170_STOPPED,
 103         AR9170_IDLE,
 104         AR9170_STARTED,
 105 };
 106
 107 struct ar9170_rxstream_mpdu_merge {
 108         struct ar9170_rx_head plcp;
 109         bool has_plcp;
 110 };
 111
 112 struct ar9170_tx_queue_stats {
 113         unsigned int len;
 114         unsigned int limit;
 115         unsigned int count;
 116 };
 117
 118 #define AR9170_QUEUE_TIMEOUT            64
 119 #define AR9170_TX_TIMEOUT               8
 120 #define AR9170_JANITOR_DELAY            128
 121 #define AR9170_TX_INVALID_RATE          0xffffffff
 122
 123 #define AR9170_NUM_TX_LIMIT_HARD        AR9170_TXQ_DEPTH
 124 #define AR9170_NUM_TX_LIMIT_SOFT        (AR9170_TXQ_DEPTH - 10)
 125
 126 struct ar9170 {
 127         struct ieee80211_hw *hw;
 128         struct ath_common common;
 129         struct mutex mutex;
 130         enum ar9170_device_state state;
 131         bool registered;
 132         unsigned long bad_hw_nagger;
 133
 134         int (*open)(struct ar9170 *);
 135         void (*stop)(struct ar9170 *);
 136         int (*tx)(struct ar9170 *, struct sk_buff *);
 137         int (*exec_cmd)(struct ar9170 *, enum ar9170_cmd, u32 ,
 138                         void *, u32 , void *);
 139         void (*callback_cmd)(struct ar9170 *, u32 , void *);
 140         int (*flush)(struct ar9170 *);
 141
 142         /* interface mode settings */
 143         struct ieee80211_vif *vif;
 144
 145         /* beaconing */
 146         struct sk_buff *beacon;
 147         struct work_struct beacon_work;
 148         bool enable_beacon;
 149
 150         /* cryptographic engine */
 151         u64 usedkeys;
 152         bool rx_software_decryption;
 153         bool disable_offload;
 154
 155         /* filter settings */
 156         u64 cur_mc_hash;
 157         u32 cur_filter;
 158         unsigned int filter_state;
 159         bool sniffer_enabled;
 160
 161         /* PHY */
 162         struct ieee80211_channel *channel;
 163         int noise[4];
 164
 165         /* power calibration data */
 166         u8 power_5G_leg[4];
 167         u8 power_2G_cck[4];
 168         u8 power_2G_ofdm[4];
 169         u8 power_5G_ht20[8];
 170         u8 power_5G_ht40[8];
 171         u8 power_2G_ht20[8];
 172         u8 power_2G_ht40[8];
 173
 174         u8 phy_heavy_clip;
 175
 176 #ifdef CONFIG_AR9170_LEDS
 177         struct delayed_work led_work;
 178         struct ar9170_led leds[AR9170_NUM_LEDS];
 179 #endif /* CONFIG_AR9170_LEDS */
 180
 181         /* qos queue settings */
 182         spinlock_t tx_stats_lock;
 183         struct ar9170_tx_queue_stats tx_stats[5];
 184         struct ieee80211_tx_queue_params edcf[5];
 185
 186         spinlock_t cmdlock;
 187         __le32 cmdbuf[PAYLOAD_MAX + 1];
 188
 189         /* MAC statistics */
 190         struct ieee80211_low_level_stats stats;
 191
 192         /* EEPROM */
 193         struct ar9170_eeprom eeprom;
 194
 195         /* tx queues - as seen by hw - */
 196         struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
 197         struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
 198         struct delayed_work tx_janitor;
 199
 200         /* rxstream mpdu merge */
 201         struct ar9170_rxstream_mpdu_merge rx_mpdu;
 202         struct sk_buff *rx_failover;
 203         int rx_failover_missing;
 204
 205         /* (cached) HW A-MPDU settings */
 206         u8 global_ampdu_density;
 207         u8 global_ampdu_factor;
 208 };
 209
 210 struct ar9170_tx_info {
 211         unsigned long timeout;
 212 };
 213
 214 #define IS_STARTED(a)           (((struct ar9170 *)a)->state >= AR9170_STARTED)
 215 #define IS_ACCEPTING_CMD(a)     (((struct ar9170 *)a)->state >= AR9170_IDLE)
 216
 217 /* exported interface */
 218 void *ar9170_alloc(size_t priv_size);
 219 int ar9170_register(struct ar9170 *ar, struct device *pdev);
 220 void ar9170_rx(struct ar9170 *ar, struct sk_buff *skb);
 221 void ar9170_unregister(struct ar9170 *ar);
 222 void ar9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 223 void ar9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 224 int ar9170_nag_limiter(struct ar9170 *ar);
 225
 226 /* MAC */
 227 int ar9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
 228 int ar9170_init_mac(struct ar9170 *ar);
 229 int ar9170_set_qos(struct ar9170 *ar);
 230 int ar9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 231 int ar9170_update_frame_filter(struct ar9170 *ar, const u32 filter);
 232 int ar9170_set_operating_mode(struct ar9170 *ar);
 233 int ar9170_set_beacon_timers(struct ar9170 *ar);
 234 int ar9170_set_dyn_sifs_ack(struct ar9170 *ar);
 235 int ar9170_set_slot_time(struct ar9170 *ar);
 236 int ar9170_set_basic_rates(struct ar9170 *ar);
 237 int ar9170_set_hwretry_limit(struct ar9170 *ar, u32 max_retry);
 238 int ar9170_update_beacon(struct ar9170 *ar);
 239 void ar9170_new_beacon(struct work_struct *work);
 240 int ar9170_upload_key(struct ar9170 *ar, u8 id, const u8 *mac, u8 ktype,
 241                       u8 keyidx, u8 *keydata, int keylen);
 242 int ar9170_disable_key(struct ar9170 *ar, u8 id);
 243
 244 /* LEDs */
 245 #ifdef CONFIG_AR9170_LEDS
 246 int ar9170_register_leds(struct ar9170 *ar);
 247 void ar9170_unregister_leds(struct ar9170 *ar);
 248 #endif /* CONFIG_AR9170_LEDS */
 249 int ar9170_init_leds(struct ar9170 *ar);
 250 int ar9170_set_leds_state(struct ar9170 *ar, u32 led_state);
 251
 252 /* PHY / RF */
 253 int ar9170_init_phy(struct ar9170 *ar, enum ieee80211_band band);
 254 int ar9170_init_rf(struct ar9170 *ar);
 255 int ar9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 256                        enum ar9170_rf_init_mode rfi, enum ar9170_bw bw);
 257
 258 #endif /* __AR9170_H */