kernel/drivers/net/wireless/cw1200/cw1200.h

   1 /*
   2  * Common private data for ST-Ericsson CW1200 drivers
   3  *
   4  * Copyright (c) 2010, ST-Ericsson
   5  * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   6  *
   7  * Based on the mac80211 Prism54 code, which is
   8  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   9  *
  10  * Based on the islsm (softmac prism54) driver, which is:
  11  * Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License version 2 as
  15  * published by the Free Software Foundation.
  16  */
  17
  18 #ifndef CW1200_H
  19 #define CW1200_H
  20
  21 #include <linux/wait.h>
  22 #include <linux/mutex.h>
  23 #include <linux/workqueue.h>
  24 #include <net/mac80211.h>
  25
  26 #include "queue.h"
  27 #include "wsm.h"
  28 #include "scan.h"
  29 #include "txrx.h"
  30 #include "pm.h"
  31
  32 /* Forward declarations */
  33 struct hwbus_ops;
  34 struct task_struct;
  35 struct cw1200_debug_priv;
  36 struct firmware;
  37
  38 #define CW1200_MAX_CTRL_FRAME_LEN       (0x1000)
  39
  40 #define CW1200_MAX_STA_IN_AP_MODE       (5)
  41 #define CW1200_LINK_ID_AFTER_DTIM       (CW1200_MAX_STA_IN_AP_MODE + 1)
  42 #define CW1200_LINK_ID_UAPSD            (CW1200_MAX_STA_IN_AP_MODE + 2)
  43 #define CW1200_LINK_ID_MAX              (CW1200_MAX_STA_IN_AP_MODE + 3)
  44 #define CW1200_MAX_REQUEUE_ATTEMPTS     (5)
  45
  46 #define CW1200_MAX_TID                  (8)
  47
  48 #define CW1200_BLOCK_ACK_CNT            (30)
  49 #define CW1200_BLOCK_ACK_THLD           (800)
  50 #define CW1200_BLOCK_ACK_HIST           (3)
  51 #define CW1200_BLOCK_ACK_INTERVAL       (1 * HZ / CW1200_BLOCK_ACK_HIST)
  52
  53 #define CW1200_JOIN_TIMEOUT             (1 * HZ)
  54 #define CW1200_AUTH_TIMEOUT             (5 * HZ)
  55
  56 struct cw1200_ht_info {
  57         struct ieee80211_sta_ht_cap     ht_cap;
  58         enum nl80211_channel_type       channel_type;
  59         u16                             operation_mode;
  60 };
  61
  62 /* Please keep order */
  63 enum cw1200_join_status {
  64         CW1200_JOIN_STATUS_PASSIVE = 0,
  65         CW1200_JOIN_STATUS_MONITOR,
  66         CW1200_JOIN_STATUS_JOINING,
  67         CW1200_JOIN_STATUS_PRE_STA,
  68         CW1200_JOIN_STATUS_STA,
  69         CW1200_JOIN_STATUS_IBSS,
  70         CW1200_JOIN_STATUS_AP,
  71 };
  72
  73 enum cw1200_link_status {
  74         CW1200_LINK_OFF,
  75         CW1200_LINK_RESERVE,
  76         CW1200_LINK_SOFT,
  77         CW1200_LINK_HARD,
  78         CW1200_LINK_RESET,
  79         CW1200_LINK_RESET_REMAP,
  80 };
  81
  82 extern int cw1200_power_mode;
  83 extern const char * const cw1200_fw_types[];
  84
  85 struct cw1200_link_entry {
  86         unsigned long                   timestamp;
  87         enum cw1200_link_status         status;
  88         enum cw1200_link_status         prev_status;
  89         u8                              mac[ETH_ALEN];
  90         u8                              buffered[CW1200_MAX_TID];
  91         struct sk_buff_head             rx_queue;
  92 };
  93
  94 struct cw1200_common {
  95         /* interfaces to the rest of the stack */
  96         struct ieee80211_hw             *hw;
  97         struct ieee80211_vif            *vif;
  98         struct device                   *pdev;
  99
 100         /* Statistics */
 101         struct ieee80211_low_level_stats stats;
 102
 103         /* Our macaddr */
 104         u8 mac_addr[ETH_ALEN];
 105
 106         /* Hardware interface */
 107         const struct hwbus_ops          *hwbus_ops;
 108         struct hwbus_priv               *hwbus_priv;
 109
 110         /* Hardware information */
 111         enum {
 112                 HIF_9000_SILICON_VERSATILE = 0,
 113                 HIF_8601_VERSATILE,
 114                 HIF_8601_SILICON,
 115         } hw_type;
 116         enum {
 117                 CW1200_HW_REV_CUT10 = 10,
 118                 CW1200_HW_REV_CUT11 = 11,
 119                 CW1200_HW_REV_CUT20 = 20,
 120                 CW1200_HW_REV_CUT22 = 22,
 121                 CW1X60_HW_REV       = 40,
 122         } hw_revision;
 123         int                             hw_refclk;
 124         bool                            hw_have_5ghz;
 125         const struct firmware           *sdd;
 126         char                            *sdd_path;
 127
 128         struct cw1200_debug_priv        *debug;
 129
 130         struct workqueue_struct         *workqueue;
 131         struct mutex                    conf_mutex;
 132
 133         struct cw1200_queue             tx_queue[4];
 134         struct cw1200_queue_stats       tx_queue_stats;
 135         int                             tx_burst_idx;
 136
 137         /* firmware/hardware info */
 138         unsigned int tx_hdr_len;
 139
 140         /* Radio data */
 141         int output_power;
 142
 143         /* BBP/MAC state */
 144         struct ieee80211_rate           *rates;
 145         struct ieee80211_rate           *mcs_rates;
 146         struct ieee80211_channel        *channel;
 147         struct wsm_edca_params          edca;
 148         struct wsm_tx_queue_params      tx_queue_params;
 149         struct wsm_mib_association_mode association_mode;
 150         struct wsm_set_bss_params       bss_params;
 151         struct cw1200_ht_info           ht_info;
 152         struct wsm_set_pm               powersave_mode;
 153         struct wsm_set_pm               firmware_ps_mode;
 154         int                             cqm_rssi_thold;
 155         unsigned                        cqm_rssi_hyst;
 156         bool                            cqm_use_rssi;
 157         int                             cqm_beacon_loss_count;
 158         int                             channel_switch_in_progress;
 159         wait_queue_head_t               channel_switch_done;
 160         u8                              long_frame_max_tx_count;
 161         u8                              short_frame_max_tx_count;
 162         int                             mode;
 163         bool                            enable_beacon;
 164         int                             beacon_int;
 165         bool                            listening;
 166         struct wsm_rx_filter            rx_filter;
 167         struct wsm_mib_multicast_filter multicast_filter;
 168         bool                            has_multicast_subscription;
 169         bool                            disable_beacon_filter;
 170         struct work_struct              update_filtering_work;
 171         struct work_struct              set_beacon_wakeup_period_work;
 172
 173         u8                              ba_rx_tid_mask;
 174         u8                              ba_tx_tid_mask;
 175
 176         struct cw1200_pm_state          pm_state;
 177
 178         struct wsm_p2p_ps_modeinfo      p2p_ps_modeinfo;
 179         struct wsm_uapsd_info           uapsd_info;
 180         bool                            setbssparams_done;
 181         bool                            bt_present;
 182         u8                              conf_listen_interval;
 183         u32                             listen_interval;
 184         u32                             erp_info;
 185         u32                             rts_threshold;
 186
 187         /* BH */
 188         atomic_t                        bh_rx;
 189         atomic_t                        bh_tx;
 190         atomic_t                        bh_term;
 191         atomic_t                        bh_suspend;
 192
 193         struct workqueue_struct         *bh_workqueue;
 194         struct work_struct              bh_work;
 195
 196         int                             bh_error;
 197         wait_queue_head_t               bh_wq;
 198         wait_queue_head_t               bh_evt_wq;
 199         u8                              buf_id_tx;
 200         u8                              buf_id_rx;
 201         u8                              wsm_rx_seq;
 202         u8                              wsm_tx_seq;
 203         int                             hw_bufs_used;
 204         bool                            powersave_enabled;
 205         bool                            device_can_sleep;
 206
 207         /* Scan status */
 208         struct cw1200_scan scan;
 209         /* Keep cw1200 awake (WUP = 1) 1 second after each scan to avoid
 210          * FW issue with sleeping/waking up.
 211          */
 212         atomic_t                        recent_scan;
 213         struct delayed_work             clear_recent_scan_work;
 214
 215         /* WSM */
 216         struct wsm_startup_ind          wsm_caps;
 217         struct mutex                    wsm_cmd_mux;
 218         struct wsm_buf                  wsm_cmd_buf;
 219         struct wsm_cmd                  wsm_cmd;
 220         wait_queue_head_t               wsm_cmd_wq;
 221         wait_queue_head_t               wsm_startup_done;
 222         int                             firmware_ready;
 223         atomic_t                        tx_lock;
 224
 225         /* WSM debug */
 226         int                             wsm_enable_wsm_dumps;
 227
 228         /* WSM Join */
 229         enum cw1200_join_status join_status;
 230         u32                     pending_frame_id;
 231         bool                    join_pending;
 232         struct delayed_work     join_timeout;
 233         struct work_struct      unjoin_work;
 234         struct work_struct      join_complete_work;
 235         int                     join_complete_status;
 236         int                     join_dtim_period;
 237         bool                    delayed_unjoin;
 238
 239         /* TX/RX and security */
 240         s8                      wep_default_key_id;
 241         struct work_struct      wep_key_work;
 242         u32                     key_map;
 243         struct wsm_add_key      keys[WSM_KEY_MAX_INDEX + 1];
 244
 245         /* AP powersave */
 246         u32                     link_id_map;
 247         struct cw1200_link_entry link_id_db[CW1200_MAX_STA_IN_AP_MODE];
 248         struct work_struct      link_id_work;
 249         struct delayed_work     link_id_gc_work;
 250         u32                     sta_asleep_mask;
 251         u32                     pspoll_mask;
 252         bool                    aid0_bit_set;
 253         spinlock_t              ps_state_lock; /* Protect power save state */
 254         bool                    buffered_multicasts;
 255         bool                    tx_multicast;
 256         struct work_struct      set_tim_work;
 257         struct work_struct      set_cts_work;
 258         struct work_struct      multicast_start_work;
 259         struct work_struct      multicast_stop_work;
 260         struct timer_list       mcast_timeout;
 261
 262         /* WSM events and CQM implementation */
 263         spinlock_t              event_queue_lock; /* Protect event queue */
 264         struct list_head        event_queue;
 265         struct work_struct      event_handler;
 266
 267         struct delayed_work     bss_loss_work;
 268         spinlock_t              bss_loss_lock; /* Protect BSS loss state */
 269         int                     bss_loss_state;
 270         u32                     bss_loss_confirm_id;
 271         int                     delayed_link_loss;
 272         struct work_struct      bss_params_work;
 273
 274         /* TX rate policy cache */
 275         struct tx_policy_cache tx_policy_cache;
 276         struct work_struct tx_policy_upload_work;
 277
 278         /* legacy PS mode switch in suspend */
 279         int                     ps_mode_switch_in_progress;
 280         wait_queue_head_t       ps_mode_switch_done;
 281
 282         /* Workaround for WFD testcase 6.1.10*/
 283         struct work_struct      linkid_reset_work;
 284         u8                      action_frame_sa[ETH_ALEN];
 285         u8                      action_linkid;
 286 };
 287
 288 struct cw1200_sta_priv {
 289         int link_id;
 290 };
 291
 292 /* interfaces for the drivers */
 293 int cw1200_core_probe(const struct hwbus_ops *hwbus_ops,
 294                       struct hwbus_priv *hwbus,
 295                       struct device *pdev,
 296                       struct cw1200_common **pself,
 297                       int ref_clk, const u8 *macaddr,
 298                       const char *sdd_path, bool have_5ghz);
 299 void cw1200_core_release(struct cw1200_common *self);
 300
 301 #define FWLOAD_BLOCK_SIZE (1024)
 302
 303 static inline int cw1200_is_ht(const struct cw1200_ht_info *ht_info)
 304 {
 305         return ht_info->channel_type != NL80211_CHAN_NO_HT;
 306 }
 307
 308 static inline int cw1200_ht_greenfield(const struct cw1200_ht_info *ht_info)
 309 {
 310         return cw1200_is_ht(ht_info) &&
 311                 (ht_info->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD) &&
 312                 !(ht_info->operation_mode &
 313                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 314 }
 315
 316 static inline int cw1200_ht_ampdu_density(const struct cw1200_ht_info *ht_info)
 317 {
 318         if (!cw1200_is_ht(ht_info))
 319                 return 0;
 320         return ht_info->ht_cap.ampdu_density;
 321 }
 322
 323 #endif /* CW1200_H */