release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/net/wireless/ath/ath.h

   1 /*
   2  * Copyright (c) 2008-2009 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #ifndef ATH_H
  18 #define ATH_H
  19
  20 #include <linux/skbuff.h>
  21 #include <linux/if_ether.h>
  22 #include <net/mac80211.h>
  23
  24 /*
  25  * The key cache is used for h/w cipher state and also for
  26  * tracking station state such as the current tx antenna.
  27  * We also setup a mapping table between key cache slot indices
  28  * and station state to short-circuit node lookups on rx.
  29  * Different parts have different size key caches.  We handle
  30  * up to ATH_KEYMAX entries (could dynamically allocate state).
  31  */
  32 #define ATH_KEYMAX              128     /* max key cache size we handle */
  33
  34 static const u8 ath_bcast_mac[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
  35
  36 struct ath_ani {
  37         bool caldone;
  38         int16_t noise_floor;
  39         unsigned int longcal_timer;
  40         unsigned int shortcal_timer;
  41         unsigned int resetcal_timer;
  42         unsigned int checkani_timer;
  43         struct timer_list timer;
  44 };
  45
  46 enum ath_device_state {
  47         ATH_HW_UNAVAILABLE,
  48         ATH_HW_INITIALIZED,
  49 };
  50
  51 enum ath_bus_type {
  52         ATH_PCI,
  53         ATH_AHB,
  54         ATH_USB,
  55 };
  56
  57 struct reg_dmn_pair_mapping {
  58         u16 regDmnEnum;
  59         u16 reg_5ghz_ctl;
  60         u16 reg_2ghz_ctl;
  61 };
  62
  63 struct ath_regulatory {
  64         char alpha2[2];
  65         u16 country_code;
  66         u16 max_power_level;
  67         u32 tp_scale;
  68         u16 current_rd;
  69         u16 current_rd_ext;
  70         int16_t power_limit;
  71         struct reg_dmn_pair_mapping *regpair;
  72 };
  73
  74 /**
  75  * struct ath_ops - Register read/write operations
  76  *
  77  * @read: Register read
  78  * @write: Register write
  79  * @enable_write_buffer: Enable multiple register writes
  80  * @disable_write_buffer: Disable multiple register writes
  81  * @write_flush: Flush buffered register writes
  82  */
  83 struct ath_ops {
  84         unsigned int (*read)(void *, u32 reg_offset);
  85         void (*write)(void *, u32 val, u32 reg_offset);
  86         void (*enable_write_buffer)(void *);
  87         void (*disable_write_buffer)(void *);
  88         void (*write_flush) (void *);
  89 };
  90
  91 struct ath_common;
  92
  93 struct ath_bus_ops {
  94         enum ath_bus_type ath_bus_type;
  95         void (*read_cachesize)(struct ath_common *common, int *csz);
  96         bool (*eeprom_read)(struct ath_common *common, u32 off, u16 *data);
  97         void (*bt_coex_prep)(struct ath_common *common);
  98 };
  99
 100 struct ath_common {
 101         void *ah;
 102         void *priv;
 103         struct ieee80211_hw *hw;
 104         int debug_mask;
 105         enum ath_device_state state;
 106
 107         struct ath_ani ani;
 108
 109         u16 cachelsz;
 110         u16 curaid;
 111         u8 macaddr[ETH_ALEN];
 112         u8 curbssid[ETH_ALEN];
 113         u8 bssidmask[ETH_ALEN];
 114
 115         u8 tx_chainmask;
 116         u8 rx_chainmask;
 117
 118         u32 rx_bufsize;
 119
 120         u32 keymax;
 121         DECLARE_BITMAP(keymap, ATH_KEYMAX);
 122         DECLARE_BITMAP(tkip_keymap, ATH_KEYMAX);
 123         u8 splitmic;
 124
 125         struct ath_regulatory regulatory;
 126         const struct ath_ops *ops;
 127         const struct ath_bus_ops *bus_ops;
 128 };
 129
 130 struct sk_buff *ath_rxbuf_alloc(struct ath_common *common,
 131                                 u32 len,
 132                                 gfp_t gfp_mask);
 133
 134 void ath_hw_setbssidmask(struct ath_common *common);
 135
 136 #endif /* ATH_H */