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/etherdevice.h> 21 #include <linux/skbuff.h> 22 #include <linux/if_ether.h> 23 #include <linux/spinlock.h> 24 #include <net/mac80211.h> 25 26 /* 27 * The key cache is used for h/w cipher state and also for 28 * tracking station state such as the current tx antenna. 29 * We also setup a mapping table between key cache slot indices 30 * and station state to short-circuit node lookups on rx. 31 * Different parts have different size key caches. We handle 32 * up to ATH_KEYMAX entries (could dynamically allocate state). 33 */ 34 #define ATH_KEYMAX 128 /* max key cache size we handle */ 35 36 struct ath_ani { 37 bool caldone; 38 unsigned int longcal_timer; 39 unsigned int shortcal_timer; 40 unsigned int resetcal_timer; 41 unsigned int checkani_timer; 42 struct timer_list timer; 43 }; 44 45 struct ath_cycle_counters { 46 u32 cycles; 47 u32 rx_busy; 48 u32 rx_frame; 49 u32 tx_frame; 50 }; 51 52 enum ath_device_state { 53 ATH_HW_UNAVAILABLE, 54 ATH_HW_INITIALIZED, 55 }; 56 57 enum ath_op_flags { 58 ATH_OP_INVALID, 59 ATH_OP_BEACONS, 60 ATH_OP_ANI_RUN, 61 ATH_OP_PRIM_STA_VIF, 62 ATH_OP_HW_RESET, 63 ATH_OP_SCANNING, 64 ATH_OP_MULTI_CHANNEL, 65 ATH_OP_WOW_ENABLED, 66 }; 67 68 enum ath_bus_type { 69 ATH_PCI, 70 ATH_AHB, 71 ATH_USB, 72 }; 73 74 struct reg_dmn_pair_mapping { 75 u16 reg_domain; 76 u16 reg_5ghz_ctl; 77 u16 reg_2ghz_ctl; 78 }; 79 80 struct ath_regulatory { 81 char alpha2[2]; 82 enum nl80211_dfs_regions region; 83 u16 country_code; 84 u16 max_power_level; 85 u16 current_rd; 86 int16_t power_limit; 87 struct reg_dmn_pair_mapping *regpair; 88 }; 89 90 enum ath_crypt_caps { 91 ATH_CRYPT_CAP_CIPHER_AESCCM = BIT(0), 92 ATH_CRYPT_CAP_MIC_COMBINED = BIT(1), 93 }; 94 95 struct ath_keyval { 96 u8 kv_type; 97 u8 kv_pad; 98 u16 kv_len; 99 struct_group(kv_values, 100 u8 kv_val[16]; /* TK */ 101 u8 kv_mic[8]; /* Michael MIC key */ 102 u8 kv_txmic[8]; /* Michael MIC TX key (used only if the hardware 103 * supports both MIC keys in the same key cache entry; 104 * in that case, kv_mic is the RX key) */ 105 ); 106 }; 107 108 enum ath_cipher { 109 ATH_CIPHER_WEP = 0, 110 ATH_CIPHER_AES_OCB = 1, 111 ATH_CIPHER_AES_CCM = 2, 112 ATH_CIPHER_CKIP = 3, 113 ATH_CIPHER_TKIP = 4, 114 ATH_CIPHER_CLR = 5, 115 ATH_CIPHER_MIC = 127 116 }; 117 118 /** 119 * struct ath_ops - Register read/write operations 120 * 121 * @read: Register read 122 * @multi_read: Multiple register read 123 * @write: Register write 124 * @enable_write_buffer: Enable multiple register writes 125 * @write_flush: flush buffered register writes and disable buffering 126 */ 127 struct ath_ops { 128 unsigned int (*read)(void *, u32 reg_offset); 129 void (*multi_read)(void *, u32 *addr, u32 *val, u16 count); 130 void (*write)(void *, u32 val, u32 reg_offset); 131 void (*enable_write_buffer)(void *); 132 void (*write_flush) (void *); 133 u32 (*rmw)(void *, u32 reg_offset, u32 set, u32 clr); 134 void (*enable_rmw_buffer)(void *); 135 void (*rmw_flush) (void *); 136 137 }; 138 139 struct ath_common; 140 struct ath_bus_ops; 141 142 struct ath_ps_ops { 143 void (*wakeup)(struct ath_common *common); 144 void (*restore)(struct ath_common *common); 145 }; 146 147 struct ath_common { 148 void *ah; 149 void *priv; 150 struct ieee80211_hw *hw; 151 int debug_mask; 152 enum ath_device_state state; 153 unsigned long op_flags; 154 155 struct ath_ani ani; 156 157 u16 cachelsz; 158 u16 curaid; 159 u8 macaddr[ETH_ALEN]; 160 u8 curbssid[ETH_ALEN] __aligned(2); 161 u8 bssidmask[ETH_ALEN]; 162 163 u32 rx_bufsize; 164 165 u32 keymax; 166 DECLARE_BITMAP(keymap, ATH_KEYMAX); 167 DECLARE_BITMAP(tkip_keymap, ATH_KEYMAX); 168 DECLARE_BITMAP(ccmp_keymap, ATH_KEYMAX); 169 enum ath_crypt_caps crypt_caps; 170 171 unsigned int clockrate; 172 173 spinlock_t cc_lock; 174 struct_group(cc, 175 struct ath_cycle_counters cc_ani; 176 struct ath_cycle_counters cc_survey; 177 ); 178 179 struct ath_regulatory regulatory; 180 struct ath_regulatory reg_world_copy; 181 const struct ath_ops *ops; 182 const struct ath_bus_ops *bus_ops; 183 const struct ath_ps_ops *ps_ops; 184 185 bool btcoex_enabled; 186 bool disable_ani; 187 bool bt_ant_diversity; 188 189 int last_rssi; 190 struct ieee80211_supported_band sbands[NUM_NL80211_BANDS]; 191 }; 192 ath_ps_ops(struct ath_common * common)193 static inline const struct ath_ps_ops *ath_ps_ops(struct ath_common *common) 194 { 195 return common->ps_ops; 196 } 197 198 struct sk_buff *ath_rxbuf_alloc(struct ath_common *common, 199 u32 len, 200 gfp_t gfp_mask); 201 bool ath_is_mybeacon(struct ath_common *common, struct ieee80211_hdr *hdr); 202 203 void ath_hw_setbssidmask(struct ath_common *common); 204 void ath_key_delete(struct ath_common *common, u8 hw_key_idx); 205 int ath_key_config(struct ath_common *common, 206 struct ieee80211_vif *vif, 207 struct ieee80211_sta *sta, 208 struct ieee80211_key_conf *key); 209 bool ath_hw_keyreset(struct ath_common *common, u16 entry); 210 bool ath_hw_keysetmac(struct ath_common *common, u16 entry, const u8 *mac); 211 void ath_hw_cycle_counters_update(struct ath_common *common); 212 int32_t ath_hw_get_listen_time(struct ath_common *common); 213 214 __printf(3, 4) 215 void ath_printk(const char *level, const struct ath_common *common, 216 const char *fmt, ...); 217 218 #define ath_emerg(common, fmt, ...) \ 219 ath_printk(KERN_EMERG, common, fmt, ##__VA_ARGS__) 220 #define ath_alert(common, fmt, ...) \ 221 ath_printk(KERN_ALERT, common, fmt, ##__VA_ARGS__) 222 #define ath_crit(common, fmt, ...) \ 223 ath_printk(KERN_CRIT, common, fmt, ##__VA_ARGS__) 224 #define ath_err(common, fmt, ...) \ 225 ath_printk(KERN_ERR, common, fmt, ##__VA_ARGS__) 226 #define ath_warn(common, fmt, ...) \ 227 ath_printk(KERN_WARNING, common, fmt, ##__VA_ARGS__) 228 #define ath_notice(common, fmt, ...) \ 229 ath_printk(KERN_NOTICE, common, fmt, ##__VA_ARGS__) 230 #define ath_info(common, fmt, ...) \ 231 ath_printk(KERN_INFO, common, fmt, ##__VA_ARGS__) 232 233 /** 234 * enum ath_debug_level - atheros wireless debug level 235 * 236 * @ATH_DBG_RESET: reset processing 237 * @ATH_DBG_QUEUE: hardware queue management 238 * @ATH_DBG_EEPROM: eeprom processing 239 * @ATH_DBG_CALIBRATE: periodic calibration 240 * @ATH_DBG_INTERRUPT: interrupt processing 241 * @ATH_DBG_REGULATORY: regulatory processing 242 * @ATH_DBG_ANI: adaptive noise immunitive processing 243 * @ATH_DBG_XMIT: basic xmit operation 244 * @ATH_DBG_BEACON: beacon handling 245 * @ATH_DBG_CONFIG: configuration of the hardware 246 * @ATH_DBG_FATAL: fatal errors, this is the default, DBG_DEFAULT 247 * @ATH_DBG_PS: power save processing 248 * @ATH_DBG_HWTIMER: hardware timer handling 249 * @ATH_DBG_BTCOEX: bluetooth coexistance 250 * @ATH_DBG_BSTUCK: stuck beacons 251 * @ATH_DBG_MCI: Message Coexistence Interface, a private protocol 252 * used exclusively for WLAN-BT coexistence starting from 253 * AR9462. 254 * @ATH_DBG_DFS: radar datection 255 * @ATH_DBG_WOW: Wake on Wireless 256 * @ATH_DBG_DYNACK: dynack handling 257 * @ATH_DBG_SPECTRAL_SCAN: FFT spectral scan 258 * @ATH_DBG_ANY: enable all debugging 259 * 260 * The debug level is used to control the amount and type of debugging output 261 * we want to see. Each driver has its own method for enabling debugging and 262 * modifying debug level states -- but this is typically done through a 263 * module parameter 'debug' along with a respective 'debug' debugfs file 264 * entry. 265 */ 266 enum ATH_DEBUG { 267 ATH_DBG_RESET = 0x00000001, 268 ATH_DBG_QUEUE = 0x00000002, 269 ATH_DBG_EEPROM = 0x00000004, 270 ATH_DBG_CALIBRATE = 0x00000008, 271 ATH_DBG_INTERRUPT = 0x00000010, 272 ATH_DBG_REGULATORY = 0x00000020, 273 ATH_DBG_ANI = 0x00000040, 274 ATH_DBG_XMIT = 0x00000080, 275 ATH_DBG_BEACON = 0x00000100, 276 ATH_DBG_CONFIG = 0x00000200, 277 ATH_DBG_FATAL = 0x00000400, 278 ATH_DBG_PS = 0x00000800, 279 ATH_DBG_BTCOEX = 0x00001000, 280 ATH_DBG_WMI = 0x00002000, 281 ATH_DBG_BSTUCK = 0x00004000, 282 ATH_DBG_MCI = 0x00008000, 283 ATH_DBG_DFS = 0x00010000, 284 ATH_DBG_WOW = 0x00020000, 285 ATH_DBG_CHAN_CTX = 0x00040000, 286 ATH_DBG_DYNACK = 0x00080000, 287 ATH_DBG_SPECTRAL_SCAN = 0x00100000, 288 ATH_DBG_ANY = 0xffffffff 289 }; 290 291 #define ATH_DBG_DEFAULT (ATH_DBG_FATAL) 292 #define ATH_DBG_MAX_LEN 512 293 294 #ifdef CONFIG_ATH_DEBUG 295 296 #define ath_dbg(common, dbg_mask, fmt, ...) \ 297 do { \ 298 if ((common)->debug_mask & ATH_DBG_##dbg_mask) \ 299 ath_printk(KERN_DEBUG, common, fmt, ##__VA_ARGS__); \ 300 } while (0) 301 302 #define ATH_DBG_WARN(foo, arg...) WARN(foo, arg) 303 #define ATH_DBG_WARN_ON_ONCE(foo) WARN_ON_ONCE(foo) 304 305 #else 306 307 static inline __attribute__ ((format (printf, 3, 4))) _ath_dbg(struct ath_common * common,enum ATH_DEBUG dbg_mask,const char * fmt,...)308 void _ath_dbg(struct ath_common *common, enum ATH_DEBUG dbg_mask, 309 const char *fmt, ...) 310 { 311 } 312 #define ath_dbg(common, dbg_mask, fmt, ...) \ 313 _ath_dbg(common, ATH_DBG_##dbg_mask, fmt, ##__VA_ARGS__) 314 315 #define ATH_DBG_WARN(foo, arg...) do {} while (0) 316 #define ATH_DBG_WARN_ON_ONCE(foo) ({ \ 317 int __ret_warn_once = !!(foo); \ 318 unlikely(__ret_warn_once); \ 319 }) 320 321 #endif /* CONFIG_ATH_DEBUG */ 322 323 /** Returns string describing opmode, or NULL if unknown mode. */ 324 #ifdef CONFIG_ATH_DEBUG 325 const char *ath_opmode_to_string(enum nl80211_iftype opmode); 326 #else ath_opmode_to_string(enum nl80211_iftype opmode)327 static inline const char *ath_opmode_to_string(enum nl80211_iftype opmode) 328 { 329 return "UNKNOWN"; 330 } 331 #endif 332 333 extern const char *ath_bus_type_strings[]; ath_bus_type_to_string(enum ath_bus_type bustype)334 static inline const char *ath_bus_type_to_string(enum ath_bus_type bustype) 335 { 336 return ath_bus_type_strings[bustype]; 337 } 338 339 #endif /* ATH_H */ 340