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 #define AR9170_NUM_MAX_BA_RETRY 5
 113 #define AR9170_NUM_TID  16
 114 #define WME_BA_BMP_SIZE         64
 115 #define AR9170_NUM_MAX_AGG_LEN  (2 * WME_BA_BMP_SIZE)
 116
 117 #define WME_AC_BE   2
 118 #define WME_AC_BK   3
 119 #define WME_AC_VI   1
 120 #define WME_AC_VO   0
 121
 122 #define TID_TO_WME_AC(_tid)                             \
 123         ((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE : \
 124          (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK : \
 125          (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI : \
 126          WME_AC_VO)
 127
 128 #define BAW_WITHIN(_start, _bawsz, _seqno) \
 129         ((((_seqno) - (_start)) & 0xfff) < (_bawsz))
 130
 131 enum ar9170_tid_state {
 132         AR9170_TID_STATE_INVALID,
 133         AR9170_TID_STATE_SHUTDOWN,
 134         AR9170_TID_STATE_PROGRESS,
 135         AR9170_TID_STATE_COMPLETE,
 136 };
 137
 138 struct ar9170_sta_tid {
 139         struct list_head list;
 140         struct sk_buff_head queue;
 141         u8 addr[ETH_ALEN];
 142         u16 ssn;
 143         u16 tid;
 144         enum ar9170_tid_state state;
 145         bool active;
 146         u8 retry;
 147 };
 148
 149 #define AR9170_QUEUE_TIMEOUT            64
 150 #define AR9170_TX_TIMEOUT               8
 151 #define AR9170_BA_TIMEOUT               4
 152 #define AR9170_JANITOR_DELAY            128
 153 #define AR9170_TX_INVALID_RATE          0xffffffff
 154
 155 #define AR9170_NUM_TX_STATUS            128
 156 #define AR9170_NUM_TX_AGG_MAX           30
 157
 158 struct ar9170 {
 159         struct ieee80211_hw *hw;
 160         struct ath_common common;
 161         struct mutex mutex;
 162         enum ar9170_device_state state;
 163         unsigned long bad_hw_nagger;
 164
 165         int (*open)(struct ar9170 *);
 166         void (*stop)(struct ar9170 *);
 167         int (*tx)(struct ar9170 *, struct sk_buff *);
 168         int (*exec_cmd)(struct ar9170 *, enum ar9170_cmd, u32 ,
 169                         void *, u32 , void *);
 170         void (*callback_cmd)(struct ar9170 *, u32 , void *);
 171         int (*flush)(struct ar9170 *);
 172
 173         /* interface mode settings */
 174         struct ieee80211_vif *vif;
 175         u8 mac_addr[ETH_ALEN];
 176         u8 bssid[ETH_ALEN];
 177
 178         /* beaconing */
 179         struct sk_buff *beacon;
 180         struct work_struct beacon_work;
 181         bool enable_beacon;
 182
 183         /* cryptographic engine */
 184         u64 usedkeys;
 185         bool rx_software_decryption;
 186         bool disable_offload;
 187
 188         /* filter settings */
 189         u64 cur_mc_hash;
 190         u32 cur_filter;
 191         unsigned int filter_state;
 192         bool sniffer_enabled;
 193
 194         /* PHY */
 195         struct ieee80211_channel *channel;
 196         int noise[4];
 197
 198         /* power calibration data */
 199         u8 power_5G_leg[4];
 200         u8 power_2G_cck[4];
 201         u8 power_2G_ofdm[4];
 202         u8 power_5G_ht20[8];
 203         u8 power_5G_ht40[8];
 204         u8 power_2G_ht20[8];
 205         u8 power_2G_ht40[8];
 206
 207 #ifdef CONFIG_AR9170_LEDS
 208         struct delayed_work led_work;
 209         struct ar9170_led leds[AR9170_NUM_LEDS];
 210 #endif /* CONFIG_AR9170_LEDS */
 211
 212         /* qos queue settings */
 213         spinlock_t tx_stats_lock;
 214         struct ieee80211_tx_queue_stats tx_stats[5];
 215         struct ieee80211_tx_queue_params edcf[5];
 216
 217         spinlock_t cmdlock;
 218         __le32 cmdbuf[PAYLOAD_MAX + 1];
 219
 220         /* MAC statistics */
 221         struct ieee80211_low_level_stats stats;
 222
 223         /* EEPROM */
 224         struct ar9170_eeprom eeprom;
 225
 226         /* tx queues - as seen by hw - */
 227         struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
 228         struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
 229         struct delayed_work tx_janitor;
 230         /* tx ampdu */
 231         struct sk_buff_head tx_status_ampdu;
 232         spinlock_t tx_ampdu_list_lock;
 233         struct list_head tx_ampdu_list;
 234         unsigned int tx_ampdu_pending;
 235
 236         /* rxstream mpdu merge */
 237         struct ar9170_rxstream_mpdu_merge rx_mpdu;
 238         struct sk_buff *rx_failover;
 239         int rx_failover_missing;
 240
 241         /* (cached) HW A-MPDU settings */
 242         u8 global_ampdu_density;
 243         u8 global_ampdu_factor;
 244 };
 245
 246 struct ar9170_sta_info {
 247         struct ar9170_sta_tid agg[AR9170_NUM_TID];
 248         unsigned int ampdu_max_len;
 249 };
 250
 251 #define AR9170_TX_FLAG_WAIT_FOR_ACK     BIT(0)
 252 #define AR9170_TX_FLAG_NO_ACK           BIT(1)
 253 #define AR9170_TX_FLAG_BLOCK_ACK        BIT(2)
 254
 255 struct ar9170_tx_info {
 256         unsigned long timeout;
 257         unsigned int flags;
 258 };
 259
 260 #define IS_STARTED(a)           (((struct ar9170 *)a)->state >= AR9170_STARTED)
 261 #define IS_ACCEPTING_CMD(a)     (((struct ar9170 *)a)->state >= AR9170_IDLE)
 262
 263 /* exported interface */
 264 void *ar9170_alloc(size_t priv_size);
 265 int ar9170_register(struct ar9170 *ar, struct device *pdev);
 266 void ar9170_rx(struct ar9170 *ar, struct sk_buff *skb);
 267 void ar9170_unregister(struct ar9170 *ar);
 268 void ar9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
 269 void ar9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
 270 int ar9170_nag_limiter(struct ar9170 *ar);
 271
 272 /* MAC */
 273 int ar9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
 274 int ar9170_init_mac(struct ar9170 *ar);
 275 int ar9170_set_qos(struct ar9170 *ar);
 276 int ar9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
 277 int ar9170_update_frame_filter(struct ar9170 *ar, const u32 filter);
 278 int ar9170_set_operating_mode(struct ar9170 *ar);
 279 int ar9170_set_beacon_timers(struct ar9170 *ar);
 280 int ar9170_set_dyn_sifs_ack(struct ar9170 *ar);
 281 int ar9170_set_slot_time(struct ar9170 *ar);
 282 int ar9170_set_basic_rates(struct ar9170 *ar);
 283 int ar9170_set_hwretry_limit(struct ar9170 *ar, u32 max_retry);
 284 int ar9170_update_beacon(struct ar9170 *ar);
 285 void ar9170_new_beacon(struct work_struct *work);
 286 int ar9170_upload_key(struct ar9170 *ar, u8 id, const u8 *mac, u8 ktype,
 287                       u8 keyidx, u8 *keydata, int keylen);
 288 int ar9170_disable_key(struct ar9170 *ar, u8 id);
 289
 290 /* LEDs */
 291 #ifdef CONFIG_AR9170_LEDS
 292 int ar9170_register_leds(struct ar9170 *ar);
 293 void ar9170_unregister_leds(struct ar9170 *ar);
 294 #endif /* CONFIG_AR9170_LEDS */
 295 int ar9170_init_leds(struct ar9170 *ar);
 296 int ar9170_set_leds_state(struct ar9170 *ar, u32 led_state);
 297
 298 /* PHY / RF */
 299 int ar9170_init_phy(struct ar9170 *ar, enum ieee80211_band band);
 300 int ar9170_init_rf(struct ar9170 *ar);
 301 int ar9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
 302                        enum ar9170_rf_init_mode rfi, enum ar9170_bw bw);
 303
 304 #endif /* __AR9170_H */