1 /* 2 Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> 3 Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com> 4 <http://rt2x00.serialmonkey.com> 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 /* 21 Module: rt2x00lib 22 Abstract: Data structures and definitions for the rt2x00lib module. 23 */ 24 25 #ifndef RT2X00LIB_H 26 #define RT2X00LIB_H 27 28 /* 29 * Interval defines 30 */ 31 #define WATCHDOG_INTERVAL round_jiffies_relative(HZ) 32 #define LINK_TUNE_INTERVAL round_jiffies_relative(HZ) 33 #define AGC_INTERVAL round_jiffies_relative(4 * HZ) 34 #define VCO_INTERVAL round_jiffies_relative(10 * HZ) /* 10 sec */ 35 36 /* 37 * rt2x00_rate: Per rate device information 38 */ 39 struct rt2x00_rate { 40 unsigned short flags; 41 #define DEV_RATE_CCK 0x0001 42 #define DEV_RATE_OFDM 0x0002 43 #define DEV_RATE_SHORT_PREAMBLE 0x0004 44 45 unsigned short bitrate; /* In 100kbit/s */ 46 unsigned short ratemask; 47 48 unsigned short plcp; 49 unsigned short mcs; 50 }; 51 52 extern const struct rt2x00_rate rt2x00_supported_rates[12]; 53 54 static inline const struct rt2x00_rate *rt2x00_get_rate(const u16 hw_value) 55 { 56 return &rt2x00_supported_rates[hw_value & 0xff]; 57 } 58 59 #define RATE_MCS(__mode, __mcs) \ 60 ((((__mode) & 0x00ff) << 8) | ((__mcs) & 0x00ff)) 61 62 static inline int rt2x00_get_rate_mcs(const u16 mcs_value) 63 { 64 return (mcs_value & 0x00ff); 65 } 66 67 /* 68 * Radio control handlers. 69 */ 70 int rt2x00lib_enable_radio(struct rt2x00_dev *rt2x00dev); 71 void rt2x00lib_disable_radio(struct rt2x00_dev *rt2x00dev); 72 73 /* 74 * Initialization handlers. 75 */ 76 int rt2x00lib_start(struct rt2x00_dev *rt2x00dev); 77 void rt2x00lib_stop(struct rt2x00_dev *rt2x00dev); 78 79 /* 80 * Configuration handlers. 81 */ 82 void rt2x00lib_config_intf(struct rt2x00_dev *rt2x00dev, 83 struct rt2x00_intf *intf, 84 enum nl80211_iftype type, 85 const u8 *mac, const u8 *bssid); 86 void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev, 87 struct rt2x00_intf *intf, 88 struct ieee80211_bss_conf *conf, 89 u32 changed); 90 void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev, 91 struct antenna_setup ant); 92 void rt2x00lib_config(struct rt2x00_dev *rt2x00dev, 93 struct ieee80211_conf *conf, 94 const unsigned int changed_flags); 95 96 /** 97 * DOC: Queue handlers 98 */ 99 100 /** 101 * rt2x00queue_alloc_rxskb - allocate a skb for RX purposes. 102 * @entry: The entry for which the skb will be applicable. 103 */ 104 struct sk_buff *rt2x00queue_alloc_rxskb(struct queue_entry *entry, gfp_t gfp); 105 106 /** 107 * rt2x00queue_free_skb - free a skb 108 * @entry: The entry for which the skb will be applicable. 109 */ 110 void rt2x00queue_free_skb(struct queue_entry *entry); 111 112 /** 113 * rt2x00queue_align_frame - Align 802.11 frame to 4-byte boundary 114 * @skb: The skb to align 115 * 116 * Align the start of the 802.11 frame to a 4-byte boundary, this could 117 * mean the payload is not aligned properly though. 118 */ 119 void rt2x00queue_align_frame(struct sk_buff *skb); 120 121 /** 122 * rt2x00queue_insert_l2pad - Align 802.11 header & payload to 4-byte boundary 123 * @skb: The skb to align 124 * @header_length: Length of 802.11 header 125 * 126 * Apply L2 padding to align both header and payload to 4-byte boundary 127 */ 128 void rt2x00queue_insert_l2pad(struct sk_buff *skb, unsigned int header_length); 129 130 /** 131 * rt2x00queue_insert_l2pad - Remove L2 padding from 802.11 frame 132 * @skb: The skb to align 133 * @header_length: Length of 802.11 header 134 * 135 * Remove L2 padding used to align both header and payload to 4-byte boundary, 136 * by removing the L2 padding the header will no longer be 4-byte aligned. 137 */ 138 void rt2x00queue_remove_l2pad(struct sk_buff *skb, unsigned int header_length); 139 140 /** 141 * rt2x00queue_write_tx_frame - Write TX frame to hardware 142 * @queue: Queue over which the frame should be send 143 * @skb: The skb to send 144 * @local: frame is not from mac80211 145 */ 146 int rt2x00queue_write_tx_frame(struct data_queue *queue, struct sk_buff *skb, 147 struct ieee80211_sta *sta, bool local); 148 149 /** 150 * rt2x00queue_update_beacon - Send new beacon from mac80211 151 * to hardware. Handles locking by itself (mutex). 152 * @rt2x00dev: Pointer to &struct rt2x00_dev. 153 * @vif: Interface for which the beacon should be updated. 154 */ 155 int rt2x00queue_update_beacon(struct rt2x00_dev *rt2x00dev, 156 struct ieee80211_vif *vif); 157 158 /** 159 * rt2x00queue_update_beacon_locked - Send new beacon from mac80211 160 * to hardware. Caller needs to ensure locking. 161 * @rt2x00dev: Pointer to &struct rt2x00_dev. 162 * @vif: Interface for which the beacon should be updated. 163 */ 164 int rt2x00queue_update_beacon_locked(struct rt2x00_dev *rt2x00dev, 165 struct ieee80211_vif *vif); 166 167 /** 168 * rt2x00queue_clear_beacon - Clear beacon in hardware 169 * @rt2x00dev: Pointer to &struct rt2x00_dev. 170 * @vif: Interface for which the beacon should be updated. 171 */ 172 int rt2x00queue_clear_beacon(struct rt2x00_dev *rt2x00dev, 173 struct ieee80211_vif *vif); 174 175 /** 176 * rt2x00queue_index_inc - Index incrementation function 177 * @entry: Queue entry (&struct queue_entry) to perform the action on. 178 * @index: Index type (&enum queue_index) to perform the action on. 179 * 180 * This function will increase the requested index on the entry's queue, 181 * it will grab the appropriate locks and handle queue overflow events by 182 * resetting the index to the start of the queue. 183 */ 184 void rt2x00queue_index_inc(struct queue_entry *entry, enum queue_index index); 185 186 /** 187 * rt2x00queue_init_queues - Initialize all data queues 188 * @rt2x00dev: Pointer to &struct rt2x00_dev. 189 * 190 * This function will loop through all available queues to clear all 191 * index numbers and set the queue entry to the correct initialization 192 * state. 193 */ 194 void rt2x00queue_init_queues(struct rt2x00_dev *rt2x00dev); 195 196 int rt2x00queue_initialize(struct rt2x00_dev *rt2x00dev); 197 void rt2x00queue_uninitialize(struct rt2x00_dev *rt2x00dev); 198 int rt2x00queue_allocate(struct rt2x00_dev *rt2x00dev); 199 void rt2x00queue_free(struct rt2x00_dev *rt2x00dev); 200 201 /** 202 * rt2x00link_update_stats - Update link statistics from RX frame 203 * @rt2x00dev: Pointer to &struct rt2x00_dev. 204 * @skb: Received frame 205 * @rxdesc: Received frame descriptor 206 * 207 * Update link statistics based on the information from the 208 * received frame descriptor. 209 */ 210 void rt2x00link_update_stats(struct rt2x00_dev *rt2x00dev, 211 struct sk_buff *skb, 212 struct rxdone_entry_desc *rxdesc); 213 214 /** 215 * rt2x00link_start_tuner - Start periodic link tuner work 216 * @rt2x00dev: Pointer to &struct rt2x00_dev. 217 * 218 * This start the link tuner periodic work, this work will 219 * be executed periodically until &rt2x00link_stop_tuner has 220 * been called. 221 */ 222 void rt2x00link_start_tuner(struct rt2x00_dev *rt2x00dev); 223 224 /** 225 * rt2x00link_stop_tuner - Stop periodic link tuner work 226 * @rt2x00dev: Pointer to &struct rt2x00_dev. 227 * 228 * After this function completed the link tuner will not 229 * be running until &rt2x00link_start_tuner is called. 230 */ 231 void rt2x00link_stop_tuner(struct rt2x00_dev *rt2x00dev); 232 233 /** 234 * rt2x00link_reset_tuner - Reset periodic link tuner work 235 * @rt2x00dev: Pointer to &struct rt2x00_dev. 236 * @antenna: Should the antenna tuning also be reset 237 * 238 * The VGC limit configured in the hardware will be reset to 0 239 * which forces the driver to rediscover the correct value for 240 * the current association. This is needed when configuration 241 * options have changed which could drastically change the 242 * SNR level or link quality (i.e. changing the antenna setting). 243 * 244 * Resetting the link tuner will also cause the periodic work counter 245 * to be reset. Any driver which has a fixed limit on the number 246 * of rounds the link tuner is supposed to work will accept the 247 * tuner actions again if this limit was previously reached. 248 * 249 * If @antenna is set to true a the software antenna diversity 250 * tuning will also be reset. 251 */ 252 void rt2x00link_reset_tuner(struct rt2x00_dev *rt2x00dev, bool antenna); 253 254 /** 255 * rt2x00link_start_watchdog - Start periodic watchdog monitoring 256 * @rt2x00dev: Pointer to &struct rt2x00_dev. 257 * 258 * This start the watchdog periodic work, this work will 259 *be executed periodically until &rt2x00link_stop_watchdog has 260 * been called. 261 */ 262 void rt2x00link_start_watchdog(struct rt2x00_dev *rt2x00dev); 263 264 /** 265 * rt2x00link_stop_watchdog - Stop periodic watchdog monitoring 266 * @rt2x00dev: Pointer to &struct rt2x00_dev. 267 * 268 * After this function completed the watchdog monitoring will not 269 * be running until &rt2x00link_start_watchdog is called. 270 */ 271 void rt2x00link_stop_watchdog(struct rt2x00_dev *rt2x00dev); 272 273 /** 274 * rt2x00link_start_agc - Start periodic gain calibration 275 * @rt2x00dev: Pointer to &struct rt2x00_dev. 276 */ 277 void rt2x00link_start_agc(struct rt2x00_dev *rt2x00dev); 278 279 /** 280 * rt2x00link_start_vcocal - Start periodic VCO calibration 281 * @rt2x00dev: Pointer to &struct rt2x00_dev. 282 */ 283 void rt2x00link_start_vcocal(struct rt2x00_dev *rt2x00dev); 284 285 /** 286 * rt2x00link_stop_agc - Stop periodic gain calibration 287 * @rt2x00dev: Pointer to &struct rt2x00_dev. 288 */ 289 void rt2x00link_stop_agc(struct rt2x00_dev *rt2x00dev); 290 291 /** 292 * rt2x00link_stop_vcocal - Stop periodic VCO calibration 293 * @rt2x00dev: Pointer to &struct rt2x00_dev. 294 */ 295 void rt2x00link_stop_vcocal(struct rt2x00_dev *rt2x00dev); 296 297 /** 298 * rt2x00link_register - Initialize link tuning & watchdog functionality 299 * @rt2x00dev: Pointer to &struct rt2x00_dev. 300 * 301 * Initialize work structure and all link tuning and watchdog related 302 * parameters. This will not start the periodic work itself. 303 */ 304 void rt2x00link_register(struct rt2x00_dev *rt2x00dev); 305 306 /* 307 * Firmware handlers. 308 */ 309 #ifdef CONFIG_RT2X00_LIB_FIRMWARE 310 int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev); 311 void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev); 312 #else 313 static inline int rt2x00lib_load_firmware(struct rt2x00_dev *rt2x00dev) 314 { 315 return 0; 316 } 317 static inline void rt2x00lib_free_firmware(struct rt2x00_dev *rt2x00dev) 318 { 319 } 320 #endif /* CONFIG_RT2X00_LIB_FIRMWARE */ 321 322 /* 323 * Debugfs handlers. 324 */ 325 #ifdef CONFIG_RT2X00_LIB_DEBUGFS 326 void rt2x00debug_register(struct rt2x00_dev *rt2x00dev); 327 void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev); 328 void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev, 329 struct rxdone_entry_desc *rxdesc); 330 #else 331 static inline void rt2x00debug_register(struct rt2x00_dev *rt2x00dev) 332 { 333 } 334 335 static inline void rt2x00debug_deregister(struct rt2x00_dev *rt2x00dev) 336 { 337 } 338 339 static inline void rt2x00debug_update_crypto(struct rt2x00_dev *rt2x00dev, 340 struct rxdone_entry_desc *rxdesc) 341 { 342 } 343 #endif /* CONFIG_RT2X00_LIB_DEBUGFS */ 344 345 /* 346 * Crypto handlers. 347 */ 348 #ifdef CONFIG_RT2X00_LIB_CRYPTO 349 enum cipher rt2x00crypto_key_to_cipher(struct ieee80211_key_conf *key); 350 void rt2x00crypto_create_tx_descriptor(struct rt2x00_dev *rt2x00dev, 351 struct sk_buff *skb, 352 struct txentry_desc *txdesc); 353 unsigned int rt2x00crypto_tx_overhead(struct rt2x00_dev *rt2x00dev, 354 struct sk_buff *skb); 355 void rt2x00crypto_tx_copy_iv(struct sk_buff *skb, 356 struct txentry_desc *txdesc); 357 void rt2x00crypto_tx_remove_iv(struct sk_buff *skb, 358 struct txentry_desc *txdesc); 359 void rt2x00crypto_tx_insert_iv(struct sk_buff *skb, unsigned int header_length); 360 void rt2x00crypto_rx_insert_iv(struct sk_buff *skb, 361 unsigned int header_length, 362 struct rxdone_entry_desc *rxdesc); 363 #else 364 static inline enum cipher rt2x00crypto_key_to_cipher(struct ieee80211_key_conf *key) 365 { 366 return CIPHER_NONE; 367 } 368 369 static inline void rt2x00crypto_create_tx_descriptor(struct rt2x00_dev *rt2x00dev, 370 struct sk_buff *skb, 371 struct txentry_desc *txdesc) 372 { 373 } 374 375 static inline unsigned int rt2x00crypto_tx_overhead(struct rt2x00_dev *rt2x00dev, 376 struct sk_buff *skb) 377 { 378 return 0; 379 } 380 381 static inline void rt2x00crypto_tx_copy_iv(struct sk_buff *skb, 382 struct txentry_desc *txdesc) 383 { 384 } 385 386 static inline void rt2x00crypto_tx_remove_iv(struct sk_buff *skb, 387 struct txentry_desc *txdesc) 388 { 389 } 390 391 static inline void rt2x00crypto_tx_insert_iv(struct sk_buff *skb, 392 unsigned int header_length) 393 { 394 } 395 396 static inline void rt2x00crypto_rx_insert_iv(struct sk_buff *skb, 397 unsigned int header_length, 398 struct rxdone_entry_desc *rxdesc) 399 { 400 } 401 #endif /* CONFIG_RT2X00_LIB_CRYPTO */ 402 403 /* 404 * RFkill handlers. 405 */ 406 static inline void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev) 407 { 408 if (test_bit(CAPABILITY_HW_BUTTON, &rt2x00dev->cap_flags)) 409 wiphy_rfkill_start_polling(rt2x00dev->hw->wiphy); 410 } 411 412 static inline void rt2x00rfkill_unregister(struct rt2x00_dev *rt2x00dev) 413 { 414 if (test_bit(CAPABILITY_HW_BUTTON, &rt2x00dev->cap_flags)) 415 wiphy_rfkill_stop_polling(rt2x00dev->hw->wiphy); 416 } 417 418 /* 419 * LED handlers 420 */ 421 #ifdef CONFIG_RT2X00_LIB_LEDS 422 void rt2x00leds_led_quality(struct rt2x00_dev *rt2x00dev, int rssi); 423 void rt2x00led_led_activity(struct rt2x00_dev *rt2x00dev, bool enabled); 424 void rt2x00leds_led_assoc(struct rt2x00_dev *rt2x00dev, bool enabled); 425 void rt2x00leds_led_radio(struct rt2x00_dev *rt2x00dev, bool enabled); 426 void rt2x00leds_register(struct rt2x00_dev *rt2x00dev); 427 void rt2x00leds_unregister(struct rt2x00_dev *rt2x00dev); 428 void rt2x00leds_suspend(struct rt2x00_dev *rt2x00dev); 429 void rt2x00leds_resume(struct rt2x00_dev *rt2x00dev); 430 #else 431 static inline void rt2x00leds_led_quality(struct rt2x00_dev *rt2x00dev, 432 int rssi) 433 { 434 } 435 436 static inline void rt2x00led_led_activity(struct rt2x00_dev *rt2x00dev, 437 bool enabled) 438 { 439 } 440 441 static inline void rt2x00leds_led_assoc(struct rt2x00_dev *rt2x00dev, 442 bool enabled) 443 { 444 } 445 446 static inline void rt2x00leds_led_radio(struct rt2x00_dev *rt2x00dev, 447 bool enabled) 448 { 449 } 450 451 static inline void rt2x00leds_register(struct rt2x00_dev *rt2x00dev) 452 { 453 } 454 455 static inline void rt2x00leds_unregister(struct rt2x00_dev *rt2x00dev) 456 { 457 } 458 459 static inline void rt2x00leds_suspend(struct rt2x00_dev *rt2x00dev) 460 { 461 } 462 463 static inline void rt2x00leds_resume(struct rt2x00_dev *rt2x00dev) 464 { 465 } 466 #endif /* CONFIG_RT2X00_LIB_LEDS */ 467 468 #endif /* RT2X00LIB_H */ 469