1 /* 2 * Atheros CARL9170 driver 3 * 4 * Driver specific definitions 5 * 6 * Copyright 2008, Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2009, 2010, Christian Lamparter <chunkeey@googlemail.com> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; see the file COPYING. If not, see 21 * http://www.gnu.org/licenses/. 22 * 23 * This file incorporates work covered by the following copyright and 24 * permission notice: 25 * Copyright (c) 2007-2008 Atheros Communications, Inc. 26 * 27 * Permission to use, copy, modify, and/or distribute this software for any 28 * purpose with or without fee is hereby granted, provided that the above 29 * copyright notice and this permission notice appear in all copies. 30 * 31 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 32 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 33 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 34 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 35 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 36 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 37 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 38 */ 39 #ifndef __CARL9170_H 40 #define __CARL9170_H 41 42 #include <linux/kernel.h> 43 #include <linux/firmware.h> 44 #include <linux/completion.h> 45 #include <linux/spinlock.h> 46 #include <linux/hw_random.h> 47 #include <net/cfg80211.h> 48 #include <net/mac80211.h> 49 #include <linux/usb.h> 50 #ifdef CONFIG_CARL9170_LEDS 51 #include <linux/leds.h> 52 #endif /* CONFIG_CARL9170_LEDS */ 53 #ifdef CONFIG_CARL9170_WPC 54 #include <linux/input.h> 55 #endif /* CONFIG_CARL9170_WPC */ 56 #include "eeprom.h" 57 #include "wlan.h" 58 #include "hw.h" 59 #include "fwdesc.h" 60 #include "fwcmd.h" 61 #include "../regd.h" 62 63 #ifdef CONFIG_CARL9170_DEBUGFS 64 #include "debug.h" 65 #endif /* CONFIG_CARL9170_DEBUGFS */ 66 67 #define CARL9170FW_NAME "carl9170-1.fw" 68 69 #define PAYLOAD_MAX (CARL9170_MAX_CMD_LEN / 4 - 1) 70 71 static const u8 ar9170_qmap[__AR9170_NUM_TXQ] = { 3, 2, 1, 0 }; 72 73 enum carl9170_rf_init_mode { 74 CARL9170_RFI_NONE, 75 CARL9170_RFI_WARM, 76 CARL9170_RFI_COLD, 77 }; 78 79 #define CARL9170_MAX_RX_BUFFER_SIZE 8192 80 81 enum carl9170_device_state { 82 CARL9170_UNKNOWN_STATE, 83 CARL9170_STOPPED, 84 CARL9170_IDLE, 85 CARL9170_STARTED, 86 }; 87 88 #define CARL9170_NUM_TID 16 89 #define WME_BA_BMP_SIZE 64 90 #define CARL9170_TX_USER_RATE_TRIES 3 91 92 #define WME_AC_BE 2 93 #define WME_AC_BK 3 94 #define WME_AC_VI 1 95 #define WME_AC_VO 0 96 97 #define TID_TO_WME_AC(_tid) \ 98 ((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE : \ 99 (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK : \ 100 (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI : \ 101 WME_AC_VO) 102 103 #define SEQ_DIFF(_start, _seq) \ 104 (((_start) - (_seq)) & 0x0fff) 105 #define SEQ_PREV(_seq) \ 106 (((_seq) - 1) & 0x0fff) 107 #define SEQ_NEXT(_seq) \ 108 (((_seq) + 1) & 0x0fff) 109 #define BAW_WITHIN(_start, _bawsz, _seqno) \ 110 ((((_seqno) - (_start)) & 0xfff) < (_bawsz)) 111 112 enum carl9170_tid_state { 113 CARL9170_TID_STATE_INVALID, 114 CARL9170_TID_STATE_KILLED, 115 CARL9170_TID_STATE_SHUTDOWN, 116 CARL9170_TID_STATE_SUSPEND, 117 CARL9170_TID_STATE_PROGRESS, 118 CARL9170_TID_STATE_IDLE, 119 CARL9170_TID_STATE_XMIT, 120 }; 121 122 #define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE) 123 #define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS)) 124 #define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE)) 125 126 struct carl9170_sta_tid { 127 /* must be the first entry! */ 128 struct list_head list; 129 130 /* temporary list for RCU unlink procedure */ 131 struct list_head tmp_list; 132 133 /* lock for the following data structures */ 134 spinlock_t lock; 135 136 unsigned int counter; 137 enum carl9170_tid_state state; 138 u8 tid; /* TID number ( 0 - 15 ) */ 139 u16 max; /* max. AMPDU size */ 140 141 u16 snx; /* awaiting _next_ frame */ 142 u16 hsn; /* highest _queued_ sequence */ 143 u16 bsn; /* base of the tx/agg bitmap */ 144 unsigned long bitmap[CARL9170_BAW_SIZE]; 145 146 /* Preaggregation reorder queue */ 147 struct sk_buff_head queue; 148 }; 149 150 #define CARL9170_QUEUE_TIMEOUT 256 151 #define CARL9170_BUMP_QUEUE 1000 152 #define CARL9170_TX_TIMEOUT 2500 153 #define CARL9170_JANITOR_DELAY 128 154 #define CARL9170_QUEUE_STUCK_TIMEOUT 5500 155 #define CARL9170_STAT_WORK 30000 156 157 #define CARL9170_NUM_TX_AGG_MAX 30 158 159 /* 160 * Tradeoff between stability/latency and speed. 161 * 162 * AR9170_TXQ_DEPTH is devised by dividing the amount of available 163 * tx buffers with the size of a full ethernet frame + overhead. 164 * 165 * Naturally: The higher the limit, the faster the device CAN send. 166 * However, even a slight over-commitment at the wrong time and the 167 * hardware is doomed to send all already-queued frames at suboptimal 168 * rates. This in turn leads to an enormous amount of unsuccessful 169 * retries => Latency goes up, whereas the throughput goes down. CRASH! 170 */ 171 #define CARL9170_NUM_TX_LIMIT_HARD ((AR9170_TXQ_DEPTH * 3) / 2) 172 #define CARL9170_NUM_TX_LIMIT_SOFT (AR9170_TXQ_DEPTH) 173 174 struct carl9170_tx_queue_stats { 175 unsigned int count; 176 unsigned int limit; 177 unsigned int len; 178 }; 179 180 struct carl9170_vif { 181 unsigned int id; 182 struct ieee80211_vif __rcu *vif; 183 }; 184 185 struct carl9170_vif_info { 186 struct list_head list; 187 bool active; 188 unsigned int id; 189 struct sk_buff *beacon; 190 bool enable_beacon; 191 }; 192 193 #define AR9170_NUM_RX_URBS 16 194 #define AR9170_NUM_RX_URBS_MUL 2 195 #define AR9170_NUM_TX_URBS 8 196 #define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS) 197 198 enum carl9170_device_features { 199 CARL9170_WPS_BUTTON = BIT(0), 200 CARL9170_ONE_LED = BIT(1), 201 }; 202 203 #ifdef CONFIG_CARL9170_LEDS 204 struct ar9170; 205 206 struct carl9170_led { 207 struct ar9170 *ar; 208 struct led_classdev l; 209 char name[32]; 210 unsigned int toggled; 211 bool last_state; 212 bool registered; 213 }; 214 #endif /* CONFIG_CARL9170_LEDS */ 215 216 enum carl9170_restart_reasons { 217 CARL9170_RR_NO_REASON = 0, 218 CARL9170_RR_FATAL_FIRMWARE_ERROR, 219 CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS, 220 CARL9170_RR_WATCHDOG, 221 CARL9170_RR_STUCK_TX, 222 CARL9170_RR_UNRESPONSIVE_DEVICE, 223 CARL9170_RR_COMMAND_TIMEOUT, 224 CARL9170_RR_TOO_MANY_PHY_ERRORS, 225 CARL9170_RR_LOST_RSP, 226 CARL9170_RR_INVALID_RSP, 227 CARL9170_RR_USER_REQUEST, 228 229 __CARL9170_RR_LAST, 230 }; 231 232 enum carl9170_erp_modes { 233 CARL9170_ERP_INVALID, 234 CARL9170_ERP_AUTO, 235 CARL9170_ERP_MAC80211, 236 CARL9170_ERP_OFF, 237 CARL9170_ERP_CTS, 238 CARL9170_ERP_RTS, 239 __CARL9170_ERP_NUM, 240 }; 241 242 struct ar9170 { 243 struct ath_common common; 244 struct ieee80211_hw *hw; 245 struct mutex mutex; 246 enum carl9170_device_state state; 247 spinlock_t state_lock; 248 enum carl9170_restart_reasons last_reason; 249 bool registered; 250 251 /* USB */ 252 struct usb_device *udev; 253 struct usb_interface *intf; 254 struct usb_anchor rx_anch; 255 struct usb_anchor rx_work; 256 struct usb_anchor rx_pool; 257 struct usb_anchor tx_wait; 258 struct usb_anchor tx_anch; 259 struct usb_anchor tx_cmd; 260 struct usb_anchor tx_err; 261 struct tasklet_struct usb_tasklet; 262 atomic_t tx_cmd_urbs; 263 atomic_t tx_anch_urbs; 264 atomic_t rx_anch_urbs; 265 atomic_t rx_work_urbs; 266 atomic_t rx_pool_urbs; 267 kernel_ulong_t features; 268 269 /* firmware settings */ 270 struct completion fw_load_wait; 271 struct completion fw_boot_wait; 272 struct { 273 const struct carl9170fw_desc_head *desc; 274 const struct firmware *fw; 275 unsigned int offset; 276 unsigned int address; 277 unsigned int cmd_bufs; 278 unsigned int api_version; 279 unsigned int vif_num; 280 unsigned int err_counter; 281 unsigned int bug_counter; 282 u32 beacon_addr; 283 unsigned int beacon_max_len; 284 bool rx_stream; 285 bool tx_stream; 286 bool rx_filter; 287 bool hw_counters; 288 unsigned int mem_blocks; 289 unsigned int mem_block_size; 290 unsigned int rx_size; 291 unsigned int tx_seq_table; 292 bool ba_filter; 293 } fw; 294 295 /* interface configuration combinations */ 296 struct ieee80211_iface_limit if_comb_limits[1]; 297 struct ieee80211_iface_combination if_combs[1]; 298 299 /* reset / stuck frames/queue detection */ 300 struct work_struct restart_work; 301 struct work_struct ping_work; 302 unsigned int restart_counter; 303 unsigned long queue_stop_timeout[__AR9170_NUM_TXQ]; 304 unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ]; 305 bool needs_full_reset; 306 atomic_t pending_restarts; 307 308 /* interface mode settings */ 309 struct list_head vif_list; 310 unsigned long vif_bitmap; 311 unsigned int vifs; 312 struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC]; 313 314 /* beaconing */ 315 spinlock_t beacon_lock; 316 unsigned int global_pretbtt; 317 unsigned int global_beacon_int; 318 struct carl9170_vif_info __rcu *beacon_iter; 319 unsigned int beacon_enabled; 320 321 /* cryptographic engine */ 322 u64 usedkeys; 323 bool rx_software_decryption; 324 bool disable_offload; 325 326 /* filter settings */ 327 u64 cur_mc_hash; 328 u32 cur_filter; 329 unsigned int filter_state; 330 unsigned int rx_filter_caps; 331 bool sniffer_enabled; 332 333 /* MAC */ 334 enum carl9170_erp_modes erp_mode; 335 336 /* PHY */ 337 struct ieee80211_channel *channel; 338 unsigned int num_channels; 339 int noise[4]; 340 unsigned int chan_fail; 341 unsigned int total_chan_fail; 342 u8 heavy_clip; 343 u8 ht_settings; 344 struct { 345 u64 active; /* usec */ 346 u64 cca; /* usec */ 347 u64 tx_time; /* usec */ 348 u64 rx_total; 349 u64 rx_overrun; 350 } tally; 351 struct delayed_work stat_work; 352 struct survey_info *survey; 353 354 /* power calibration data */ 355 u8 power_5G_leg[4]; 356 u8 power_2G_cck[4]; 357 u8 power_2G_ofdm[4]; 358 u8 power_5G_ht20[8]; 359 u8 power_5G_ht40[8]; 360 u8 power_2G_ht20[8]; 361 u8 power_2G_ht40[8]; 362 363 #ifdef CONFIG_CARL9170_LEDS 364 /* LED */ 365 struct delayed_work led_work; 366 struct carl9170_led leds[AR9170_NUM_LEDS]; 367 #endif /* CONFIG_CARL9170_LEDS */ 368 369 /* qos queue settings */ 370 spinlock_t tx_stats_lock; 371 struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ]; 372 struct ieee80211_tx_queue_params edcf[5]; 373 struct completion tx_flush; 374 375 /* CMD */ 376 int cmd_seq; 377 int readlen; 378 u8 *readbuf; 379 spinlock_t cmd_lock; 380 struct completion cmd_wait; 381 union { 382 __le32 cmd_buf[PAYLOAD_MAX + 1]; 383 struct carl9170_cmd cmd; 384 struct carl9170_rsp rsp; 385 }; 386 387 /* statistics */ 388 unsigned int tx_dropped; 389 unsigned int tx_ack_failures; 390 unsigned int tx_fcs_errors; 391 unsigned int rx_dropped; 392 393 /* EEPROM */ 394 struct ar9170_eeprom eeprom; 395 396 /* tx queuing */ 397 struct sk_buff_head tx_pending[__AR9170_NUM_TXQ]; 398 struct sk_buff_head tx_status[__AR9170_NUM_TXQ]; 399 struct delayed_work tx_janitor; 400 unsigned long tx_janitor_last_run; 401 bool tx_schedule; 402 403 /* tx ampdu */ 404 struct work_struct ampdu_work; 405 spinlock_t tx_ampdu_list_lock; 406 struct carl9170_sta_tid __rcu *tx_ampdu_iter; 407 struct list_head tx_ampdu_list; 408 atomic_t tx_ampdu_upload; 409 atomic_t tx_ampdu_scheduler; 410 atomic_t tx_total_pending; 411 atomic_t tx_total_queued; 412 unsigned int tx_ampdu_list_len; 413 int current_density; 414 int current_factor; 415 bool tx_ampdu_schedule; 416 417 /* internal memory management */ 418 spinlock_t mem_lock; 419 unsigned long *mem_bitmap; 420 atomic_t mem_free_blocks; 421 atomic_t mem_allocs; 422 423 /* rxstream mpdu merge */ 424 struct ar9170_rx_head rx_plcp; 425 bool rx_has_plcp; 426 struct sk_buff *rx_failover; 427 int rx_failover_missing; 428 429 /* FIFO for collecting outstanding BlockAckRequest */ 430 struct list_head bar_list[__AR9170_NUM_TXQ]; 431 spinlock_t bar_list_lock[__AR9170_NUM_TXQ]; 432 433 #ifdef CONFIG_CARL9170_WPC 434 struct { 435 bool pbc_state; 436 struct input_dev *pbc; 437 char name[32]; 438 char phys[32]; 439 } wps; 440 #endif /* CONFIG_CARL9170_WPC */ 441 442 #ifdef CONFIG_CARL9170_DEBUGFS 443 struct carl9170_debug debug; 444 struct dentry *debug_dir; 445 #endif /* CONFIG_CARL9170_DEBUGFS */ 446 447 /* PSM */ 448 struct work_struct ps_work; 449 struct { 450 unsigned int dtim_counter; 451 unsigned long last_beacon; 452 unsigned long last_action; 453 unsigned long last_slept; 454 unsigned int sleep_ms; 455 unsigned int off_override; 456 bool state; 457 } ps; 458 459 #ifdef CONFIG_CARL9170_HWRNG 460 # define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN 461 struct { 462 struct hwrng rng; 463 bool initialized; 464 char name[30 + 1]; 465 u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)]; 466 unsigned int cache_idx; 467 } rng; 468 #endif /* CONFIG_CARL9170_HWRNG */ 469 }; 470 471 enum carl9170_ps_off_override_reasons { 472 PS_OFF_VIF = BIT(0), 473 PS_OFF_BCN = BIT(1), 474 }; 475 476 struct carl9170_bar_list_entry { 477 struct list_head list; 478 struct rcu_head head; 479 struct sk_buff *skb; 480 }; 481 482 struct carl9170_ba_stats { 483 u8 ampdu_len; 484 u8 ampdu_ack_len; 485 bool clear; 486 bool req; 487 }; 488 489 struct carl9170_sta_info { 490 bool ht_sta; 491 bool sleeping; 492 atomic_t pending_frames; 493 unsigned int ampdu_max_len; 494 struct carl9170_sta_tid __rcu *agg[CARL9170_NUM_TID]; 495 struct carl9170_ba_stats stats[CARL9170_NUM_TID]; 496 }; 497 498 struct carl9170_tx_info { 499 unsigned long timeout; 500 struct ar9170 *ar; 501 struct kref ref; 502 }; 503 504 #define CHK_DEV_STATE(a, s) (((struct ar9170 *)a)->state >= (s)) 505 #define IS_INITIALIZED(a) (CHK_DEV_STATE(a, CARL9170_STOPPED)) 506 #define IS_ACCEPTING_CMD(a) (CHK_DEV_STATE(a, CARL9170_IDLE)) 507 #define IS_STARTED(a) (CHK_DEV_STATE(a, CARL9170_STARTED)) 508 509 static inline void __carl9170_set_state(struct ar9170 *ar, 510 enum carl9170_device_state newstate) 511 { 512 ar->state = newstate; 513 } 514 515 static inline void carl9170_set_state(struct ar9170 *ar, 516 enum carl9170_device_state newstate) 517 { 518 unsigned long flags; 519 520 spin_lock_irqsave(&ar->state_lock, flags); 521 __carl9170_set_state(ar, newstate); 522 spin_unlock_irqrestore(&ar->state_lock, flags); 523 } 524 525 static inline void carl9170_set_state_when(struct ar9170 *ar, 526 enum carl9170_device_state min, enum carl9170_device_state newstate) 527 { 528 unsigned long flags; 529 530 spin_lock_irqsave(&ar->state_lock, flags); 531 if (CHK_DEV_STATE(ar, min)) 532 __carl9170_set_state(ar, newstate); 533 spin_unlock_irqrestore(&ar->state_lock, flags); 534 } 535 536 /* exported interface */ 537 void *carl9170_alloc(size_t priv_size); 538 int carl9170_register(struct ar9170 *ar); 539 void carl9170_unregister(struct ar9170 *ar); 540 void carl9170_free(struct ar9170 *ar); 541 void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r); 542 void carl9170_ps_check(struct ar9170 *ar); 543 544 /* USB back-end */ 545 int carl9170_usb_open(struct ar9170 *ar); 546 void carl9170_usb_stop(struct ar9170 *ar); 547 void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb); 548 void carl9170_usb_handle_tx_err(struct ar9170 *ar); 549 int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids, 550 u32 plen, void *payload, u32 rlen, void *resp); 551 int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd, 552 const bool free_buf); 553 int carl9170_usb_restart(struct ar9170 *ar); 554 void carl9170_usb_reset(struct ar9170 *ar); 555 556 /* MAC */ 557 int carl9170_init_mac(struct ar9170 *ar); 558 int carl9170_set_qos(struct ar9170 *ar); 559 int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast); 560 int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id, 561 const u8 *mac); 562 int carl9170_set_operating_mode(struct ar9170 *ar); 563 int carl9170_set_beacon_timers(struct ar9170 *ar); 564 int carl9170_set_dyn_sifs_ack(struct ar9170 *ar); 565 int carl9170_set_rts_cts_rate(struct ar9170 *ar); 566 int carl9170_set_ampdu_settings(struct ar9170 *ar); 567 int carl9170_set_slot_time(struct ar9170 *ar); 568 int carl9170_set_mac_rates(struct ar9170 *ar); 569 int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry); 570 int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac, 571 const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen); 572 int carl9170_disable_key(struct ar9170 *ar, const u8 id); 573 int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel); 574 575 /* RX */ 576 void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len); 577 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len); 578 579 /* TX */ 580 void carl9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb); 581 void carl9170_tx_janitor(struct work_struct *work); 582 void carl9170_tx_process_status(struct ar9170 *ar, 583 const struct carl9170_rsp *cmd); 584 void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb, 585 const bool success); 586 void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb); 587 void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb); 588 void carl9170_tx_scheduler(struct ar9170 *ar); 589 void carl9170_tx_get_skb(struct sk_buff *skb); 590 int carl9170_tx_put_skb(struct sk_buff *skb); 591 int carl9170_update_beacon(struct ar9170 *ar, const bool submit); 592 593 /* LEDs */ 594 #ifdef CONFIG_CARL9170_LEDS 595 int carl9170_led_register(struct ar9170 *ar); 596 void carl9170_led_unregister(struct ar9170 *ar); 597 #endif /* CONFIG_CARL9170_LEDS */ 598 int carl9170_led_init(struct ar9170 *ar); 599 int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state); 600 601 /* PHY / RF */ 602 int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel, 603 enum nl80211_channel_type bw, enum carl9170_rf_init_mode rfi); 604 int carl9170_get_noisefloor(struct ar9170 *ar); 605 606 /* FW */ 607 int carl9170_parse_firmware(struct ar9170 *ar); 608 609 extern struct ieee80211_rate __carl9170_ratetable[]; 610 extern int modparam_noht; 611 612 static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif) 613 { 614 return container_of(carl_vif, struct ar9170, 615 vif_priv[carl_vif->id]); 616 } 617 618 static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb) 619 { 620 return (void *)((struct _carl9170_tx_superframe *) 621 skb->data)->frame_data; 622 } 623 624 static inline u16 get_seq_h(struct ieee80211_hdr *hdr) 625 { 626 return le16_to_cpu(hdr->seq_ctrl) >> 4; 627 } 628 629 static inline u16 carl9170_get_seq(struct sk_buff *skb) 630 { 631 return get_seq_h(carl9170_get_hdr(skb)); 632 } 633 634 static inline u16 get_tid_h(struct ieee80211_hdr *hdr) 635 { 636 return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK; 637 } 638 639 static inline u16 carl9170_get_tid(struct sk_buff *skb) 640 { 641 return get_tid_h(carl9170_get_hdr(skb)); 642 } 643 644 static inline struct ieee80211_vif * 645 carl9170_get_vif(struct carl9170_vif_info *priv) 646 { 647 return container_of((void *)priv, struct ieee80211_vif, drv_priv); 648 } 649 650 /* Protected by ar->mutex or RCU */ 651 static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar) 652 { 653 struct carl9170_vif_info *cvif; 654 655 list_for_each_entry_rcu(cvif, &ar->vif_list, list) { 656 if (cvif->active) 657 return carl9170_get_vif(cvif); 658 } 659 660 return NULL; 661 } 662 663 static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif) 664 { 665 bool ret; 666 667 rcu_read_lock(); 668 ret = (carl9170_get_main_vif(ar) == vif); 669 rcu_read_unlock(); 670 return ret; 671 } 672 673 #endif /* __CARL9170_H */ 674