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
ar9170_qmap(u8 idx)71 static inline u8 ar9170_qmap(u8 idx)
72 {
73 return 3 - idx; /* { 3, 2, 1, 0 } */
74 }
75
76 #define CARL9170_MAX_RX_BUFFER_SIZE 8192
77
78 enum carl9170_device_state {
79 CARL9170_UNKNOWN_STATE,
80 CARL9170_STOPPED,
81 CARL9170_IDLE,
82 CARL9170_STARTED,
83 };
84
85 #define WME_BA_BMP_SIZE 64
86 #define CARL9170_TX_USER_RATE_TRIES 3
87
88 #define TID_TO_WME_AC(_tid) \
89 ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE : \
90 (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK : \
91 (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI : \
92 IEEE80211_AC_VO)
93
94 #define SEQ_DIFF(_start, _seq) \
95 (((_start) - (_seq)) & 0x0fff)
96 #define SEQ_PREV(_seq) \
97 (((_seq) - 1) & 0x0fff)
98 #define SEQ_NEXT(_seq) \
99 (((_seq) + 1) & 0x0fff)
100 #define BAW_WITHIN(_start, _bawsz, _seqno) \
101 ((((_seqno) - (_start)) & 0xfff) < (_bawsz))
102
103 enum carl9170_tid_state {
104 CARL9170_TID_STATE_INVALID,
105 CARL9170_TID_STATE_KILLED,
106 CARL9170_TID_STATE_SHUTDOWN,
107 CARL9170_TID_STATE_SUSPEND,
108 CARL9170_TID_STATE_PROGRESS,
109 CARL9170_TID_STATE_IDLE,
110 CARL9170_TID_STATE_XMIT,
111 };
112
113 #define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
114 #define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
115 #define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))
116
117 struct carl9170_sta_tid {
118 /* must be the first entry! */
119 struct list_head list;
120
121 /* temporary list for RCU unlink procedure */
122 struct list_head tmp_list;
123
124 /* lock for the following data structures */
125 spinlock_t lock;
126
127 unsigned int counter;
128 enum carl9170_tid_state state;
129 u8 tid; /* TID number ( 0 - 15 ) */
130 u16 max; /* max. AMPDU size */
131
132 u16 snx; /* awaiting _next_ frame */
133 u16 hsn; /* highest _queued_ sequence */
134 u16 bsn; /* base of the tx/agg bitmap */
135 unsigned long bitmap[CARL9170_BAW_SIZE];
136
137 /* Preaggregation reorder queue */
138 struct sk_buff_head queue;
139
140 struct ieee80211_sta *sta;
141 struct ieee80211_vif *vif;
142 };
143
144 #define CARL9170_QUEUE_TIMEOUT 256
145 #define CARL9170_BUMP_QUEUE 1000
146 #define CARL9170_TX_TIMEOUT 2500
147 #define CARL9170_JANITOR_DELAY 128
148 #define CARL9170_QUEUE_STUCK_TIMEOUT 5500
149 #define CARL9170_STAT_WORK 30000
150
151 #define CARL9170_NUM_TX_AGG_MAX 30
152
153 /*
154 * Tradeoff between stability/latency and speed.
155 *
156 * AR9170_TXQ_DEPTH is devised by dividing the amount of available
157 * tx buffers with the size of a full ethernet frame + overhead.
158 *
159 * Naturally: The higher the limit, the faster the device CAN send.
160 * However, even a slight over-commitment at the wrong time and the
161 * hardware is doomed to send all already-queued frames at suboptimal
162 * rates. This in turn leads to an enormous amount of unsuccessful
163 * retries => Latency goes up, whereas the throughput goes down. CRASH!
164 */
165 #define CARL9170_NUM_TX_LIMIT_HARD ((AR9170_TXQ_DEPTH * 3) / 2)
166 #define CARL9170_NUM_TX_LIMIT_SOFT (AR9170_TXQ_DEPTH)
167
168 struct carl9170_tx_queue_stats {
169 unsigned int count;
170 unsigned int limit;
171 unsigned int len;
172 };
173
174 struct carl9170_vif {
175 unsigned int id;
176 struct ieee80211_vif __rcu *vif;
177 };
178
179 struct carl9170_vif_info {
180 struct list_head list;
181 bool active;
182 unsigned int id;
183 struct sk_buff *beacon;
184 bool enable_beacon;
185 };
186
187 #define AR9170_NUM_RX_URBS 16
188 #define AR9170_NUM_RX_URBS_MUL 2
189 #define AR9170_NUM_TX_URBS 8
190 #define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
191
192 enum carl9170_device_features {
193 CARL9170_WPS_BUTTON = BIT(0),
194 CARL9170_ONE_LED = BIT(1),
195 };
196
197 #ifdef CONFIG_CARL9170_LEDS
198 struct ar9170;
199
200 struct carl9170_led {
201 struct ar9170 *ar;
202 struct led_classdev l;
203 char name[32];
204 unsigned int toggled;
205 bool last_state;
206 bool registered;
207 };
208 #endif /* CONFIG_CARL9170_LEDS */
209
210 enum carl9170_restart_reasons {
211 CARL9170_RR_NO_REASON = 0,
212 CARL9170_RR_FATAL_FIRMWARE_ERROR,
213 CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
214 CARL9170_RR_WATCHDOG,
215 CARL9170_RR_STUCK_TX,
216 CARL9170_RR_UNRESPONSIVE_DEVICE,
217 CARL9170_RR_COMMAND_TIMEOUT,
218 CARL9170_RR_TOO_MANY_PHY_ERRORS,
219 CARL9170_RR_LOST_RSP,
220 CARL9170_RR_INVALID_RSP,
221 CARL9170_RR_USER_REQUEST,
222
223 __CARL9170_RR_LAST,
224 };
225
226 enum carl9170_erp_modes {
227 CARL9170_ERP_INVALID,
228 CARL9170_ERP_AUTO,
229 CARL9170_ERP_MAC80211,
230 CARL9170_ERP_OFF,
231 CARL9170_ERP_CTS,
232 CARL9170_ERP_RTS,
233 __CARL9170_ERP_NUM,
234 };
235
236 struct ar9170 {
237 struct ath_common common;
238 struct ieee80211_hw *hw;
239 struct mutex mutex;
240 enum carl9170_device_state state;
241 spinlock_t state_lock;
242 enum carl9170_restart_reasons last_reason;
243 bool registered;
244
245 /* USB */
246 struct usb_device *udev;
247 struct usb_interface *intf;
248 struct usb_anchor rx_anch;
249 struct usb_anchor rx_work;
250 struct usb_anchor rx_pool;
251 struct usb_anchor tx_wait;
252 struct usb_anchor tx_anch;
253 struct usb_anchor tx_cmd;
254 struct usb_anchor tx_err;
255 struct tasklet_struct usb_tasklet;
256 atomic_t tx_cmd_urbs;
257 atomic_t tx_anch_urbs;
258 atomic_t rx_anch_urbs;
259 atomic_t rx_work_urbs;
260 atomic_t rx_pool_urbs;
261 kernel_ulong_t features;
262 bool usb_ep_cmd_is_bulk;
263
264 /* firmware settings */
265 struct completion fw_load_wait;
266 struct completion fw_boot_wait;
267 struct {
268 const struct carl9170fw_desc_head *desc;
269 const struct firmware *fw;
270 unsigned int offset;
271 unsigned int address;
272 unsigned int cmd_bufs;
273 unsigned int api_version;
274 unsigned int vif_num;
275 unsigned int err_counter;
276 unsigned int bug_counter;
277 u32 beacon_addr;
278 unsigned int beacon_max_len;
279 bool rx_stream;
280 bool tx_stream;
281 bool rx_filter;
282 bool hw_counters;
283 unsigned int mem_blocks;
284 unsigned int mem_block_size;
285 unsigned int rx_size;
286 unsigned int tx_seq_table;
287 bool ba_filter;
288 bool disable_offload_fw;
289 } fw;
290
291 /* interface configuration combinations */
292 struct ieee80211_iface_limit if_comb_limits[1];
293 struct ieee80211_iface_combination if_combs[1];
294
295 /* reset / stuck frames/queue detection */
296 struct work_struct restart_work;
297 struct work_struct ping_work;
298 unsigned int restart_counter;
299 unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
300 unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
301 bool needs_full_reset;
302 bool force_usb_reset;
303 atomic_t pending_restarts;
304
305 /* interface mode settings */
306 struct list_head vif_list;
307 unsigned long vif_bitmap;
308 unsigned int vifs;
309 struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
310
311 /* beaconing */
312 spinlock_t beacon_lock;
313 unsigned int global_pretbtt;
314 unsigned int global_beacon_int;
315 struct carl9170_vif_info __rcu *beacon_iter;
316 unsigned int beacon_enabled;
317
318 /* cryptographic engine */
319 u64 usedkeys;
320 bool rx_software_decryption;
321 bool disable_offload;
322
323 /* filter settings */
324 u64 cur_mc_hash;
325 u32 cur_filter;
326 unsigned int filter_state;
327 unsigned int rx_filter_caps;
328 bool sniffer_enabled;
329
330 /* MAC */
331 enum carl9170_erp_modes erp_mode;
332
333 /* PHY */
334 struct ieee80211_channel *channel;
335 unsigned int num_channels;
336 int noise[4];
337 unsigned int chan_fail;
338 unsigned int total_chan_fail;
339 u8 heavy_clip;
340 u8 ht_settings;
341 struct {
342 u64 active; /* usec */
343 u64 cca; /* usec */
344 u64 tx_time; /* usec */
345 u64 rx_total;
346 u64 rx_overrun;
347 } tally;
348 struct delayed_work stat_work;
349 struct survey_info *survey;
350
351 /* power calibration data */
352 u8 power_5G_leg[4];
353 u8 power_2G_cck[4];
354 u8 power_2G_ofdm[4];
355 u8 power_5G_ht20[8];
356 u8 power_5G_ht40[8];
357 u8 power_2G_ht20[8];
358 u8 power_2G_ht40[8];
359
360 #ifdef CONFIG_CARL9170_LEDS
361 /* LED */
362 struct delayed_work led_work;
363 struct carl9170_led leds[AR9170_NUM_LEDS];
364 #endif /* CONFIG_CARL9170_LEDS */
365
366 /* qos queue settings */
367 spinlock_t tx_stats_lock;
368 struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
369 struct ieee80211_tx_queue_params edcf[5];
370 struct completion tx_flush;
371
372 /* CMD */
373 int cmd_seq;
374 int readlen;
375 u8 *readbuf;
376 spinlock_t cmd_lock;
377 struct completion cmd_wait;
378 union {
379 __le32 cmd_buf[PAYLOAD_MAX + 1];
380 struct carl9170_cmd cmd;
381 struct carl9170_rsp rsp;
382 };
383
384 /* statistics */
385 unsigned int tx_dropped;
386 unsigned int tx_ack_failures;
387 unsigned int tx_fcs_errors;
388 unsigned int rx_dropped;
389
390 /* EEPROM */
391 struct ar9170_eeprom eeprom;
392
393 /* tx queuing */
394 struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
395 struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
396 struct delayed_work tx_janitor;
397 unsigned long tx_janitor_last_run;
398 bool tx_schedule;
399
400 /* tx ampdu */
401 struct work_struct ampdu_work;
402 spinlock_t tx_ampdu_list_lock;
403 struct carl9170_sta_tid __rcu *tx_ampdu_iter;
404 struct list_head tx_ampdu_list;
405 atomic_t tx_ampdu_upload;
406 atomic_t tx_ampdu_scheduler;
407 atomic_t tx_total_pending;
408 atomic_t tx_total_queued;
409 unsigned int tx_ampdu_list_len;
410 int current_density;
411 int current_factor;
412 bool tx_ampdu_schedule;
413
414 /* internal memory management */
415 spinlock_t mem_lock;
416 unsigned long *mem_bitmap;
417 atomic_t mem_free_blocks;
418 atomic_t mem_allocs;
419
420 /* rxstream mpdu merge */
421 struct ar9170_rx_head rx_plcp;
422 bool rx_has_plcp;
423 struct sk_buff *rx_failover;
424 int rx_failover_missing;
425 u32 ampdu_ref;
426
427 /* FIFO for collecting outstanding BlockAckRequest */
428 struct list_head bar_list[__AR9170_NUM_TXQ];
429 spinlock_t bar_list_lock[__AR9170_NUM_TXQ];
430
431 #ifdef CONFIG_CARL9170_WPC
432 struct {
433 bool pbc_state;
434 struct input_dev *pbc;
435 char name[32];
436 char phys[32];
437 } wps;
438 #endif /* CONFIG_CARL9170_WPC */
439
440 #ifdef CONFIG_CARL9170_DEBUGFS
441 struct carl9170_debug debug;
442 struct dentry *debug_dir;
443 #endif /* CONFIG_CARL9170_DEBUGFS */
444
445 /* PSM */
446 struct work_struct ps_work;
447 struct {
448 unsigned int dtim_counter;
449 unsigned long last_beacon;
450 unsigned long last_action;
451 unsigned long last_slept;
452 unsigned int sleep_ms;
453 unsigned int off_override;
454 bool state;
455 } ps;
456
457 #ifdef CONFIG_CARL9170_HWRNG
458 # define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN
459 struct {
460 struct hwrng rng;
461 char name[30 + 1];
462 u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
463 unsigned int cache_idx;
464 } rng;
465 #endif /* CONFIG_CARL9170_HWRNG */
466 };
467
468 enum carl9170_ps_off_override_reasons {
469 PS_OFF_VIF = BIT(0),
470 PS_OFF_BCN = BIT(1),
471 };
472
473 struct carl9170_bar_list_entry {
474 struct list_head list;
475 struct rcu_head head;
476 struct sk_buff *skb;
477 };
478
479 struct carl9170_ba_stats {
480 u8 ampdu_len;
481 u8 ampdu_ack_len;
482 bool clear;
483 bool req;
484 };
485
486 struct carl9170_sta_info {
487 bool ht_sta;
488 bool sleeping;
489 atomic_t pending_frames;
490 unsigned int ampdu_max_len;
491 struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS];
492 struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS];
493 };
494
495 struct carl9170_tx_info {
496 unsigned long timeout;
497 struct ar9170 *ar;
498 struct kref ref;
499 };
500
501 #define CHK_DEV_STATE(a, s) (((struct ar9170 *)a)->state >= (s))
502 #define IS_INITIALIZED(a) (CHK_DEV_STATE(a, CARL9170_STOPPED))
503 #define IS_ACCEPTING_CMD(a) (CHK_DEV_STATE(a, CARL9170_IDLE))
504 #define IS_STARTED(a) (CHK_DEV_STATE(a, CARL9170_STARTED))
505
__carl9170_set_state(struct ar9170 * ar,enum carl9170_device_state newstate)506 static inline void __carl9170_set_state(struct ar9170 *ar,
507 enum carl9170_device_state newstate)
508 {
509 ar->state = newstate;
510 }
511
carl9170_set_state(struct ar9170 * ar,enum carl9170_device_state newstate)512 static inline void carl9170_set_state(struct ar9170 *ar,
513 enum carl9170_device_state newstate)
514 {
515 unsigned long flags;
516
517 spin_lock_irqsave(&ar->state_lock, flags);
518 __carl9170_set_state(ar, newstate);
519 spin_unlock_irqrestore(&ar->state_lock, flags);
520 }
521
carl9170_set_state_when(struct ar9170 * ar,enum carl9170_device_state min,enum carl9170_device_state newstate)522 static inline void carl9170_set_state_when(struct ar9170 *ar,
523 enum carl9170_device_state min, enum carl9170_device_state newstate)
524 {
525 unsigned long flags;
526
527 spin_lock_irqsave(&ar->state_lock, flags);
528 if (CHK_DEV_STATE(ar, min))
529 __carl9170_set_state(ar, newstate);
530 spin_unlock_irqrestore(&ar->state_lock, flags);
531 }
532
533 /* exported interface */
534 void *carl9170_alloc(size_t priv_size);
535 int carl9170_register(struct ar9170 *ar);
536 void carl9170_unregister(struct ar9170 *ar);
537 void carl9170_free(struct ar9170 *ar);
538 void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
539 void carl9170_ps_check(struct ar9170 *ar);
540
541 /* USB back-end */
542 int carl9170_usb_open(struct ar9170 *ar);
543 void carl9170_usb_stop(struct ar9170 *ar);
544 void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
545 void carl9170_usb_handle_tx_err(struct ar9170 *ar);
546 int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
547 u32 plen, void *payload, u32 rlen, void *resp);
548 int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
549 const bool free_buf);
550 int carl9170_usb_restart(struct ar9170 *ar);
551 void carl9170_usb_reset(struct ar9170 *ar);
552
553 /* MAC */
554 int carl9170_init_mac(struct ar9170 *ar);
555 int carl9170_set_qos(struct ar9170 *ar);
556 int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
557 int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
558 const u8 *mac);
559 int carl9170_set_operating_mode(struct ar9170 *ar);
560 int carl9170_set_beacon_timers(struct ar9170 *ar);
561 int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
562 int carl9170_set_rts_cts_rate(struct ar9170 *ar);
563 int carl9170_set_ampdu_settings(struct ar9170 *ar);
564 int carl9170_set_slot_time(struct ar9170 *ar);
565 int carl9170_set_mac_rates(struct ar9170 *ar);
566 int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
567 int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
568 const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
569 int carl9170_disable_key(struct ar9170 *ar, const u8 id);
570 int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
571
572 /* RX */
573 void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
574 void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
575
576 /* TX */
577 void carl9170_op_tx(struct ieee80211_hw *hw,
578 struct ieee80211_tx_control *control,
579 struct sk_buff *skb);
580 void carl9170_tx_janitor(struct work_struct *work);
581 void carl9170_tx_process_status(struct ar9170 *ar,
582 const struct carl9170_rsp *cmd);
583 void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
584 const bool success);
585 void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
586 void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
587 void carl9170_tx_scheduler(struct ar9170 *ar);
588 void carl9170_tx_get_skb(struct sk_buff *skb);
589 int carl9170_tx_put_skb(struct sk_buff *skb);
590 int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
591
592 /* LEDs */
593 #ifdef CONFIG_CARL9170_LEDS
594 int carl9170_led_register(struct ar9170 *ar);
595 void carl9170_led_unregister(struct ar9170 *ar);
596 #endif /* CONFIG_CARL9170_LEDS */
597 int carl9170_led_init(struct ar9170 *ar);
598 int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
599
600 /* PHY / RF */
601 int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
602 enum nl80211_channel_type bw);
603 int carl9170_get_noisefloor(struct ar9170 *ar);
604
605 /* FW */
606 int carl9170_parse_firmware(struct ar9170 *ar);
607
608 extern struct ieee80211_rate __carl9170_ratetable[];
609 extern int modparam_noht;
610
carl9170_get_priv(struct carl9170_vif * carl_vif)611 static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
612 {
613 return container_of(carl_vif, struct ar9170,
614 vif_priv[carl_vif->id]);
615 }
616
carl9170_get_hdr(struct sk_buff * skb)617 static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
618 {
619 return (void *)((struct _carl9170_tx_superframe *)
620 skb->data)->frame_data;
621 }
622
get_seq_h(struct ieee80211_hdr * hdr)623 static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
624 {
625 return le16_to_cpu(hdr->seq_ctrl) >> 4;
626 }
627
carl9170_get_seq(struct sk_buff * skb)628 static inline u16 carl9170_get_seq(struct sk_buff *skb)
629 {
630 return get_seq_h(carl9170_get_hdr(skb));
631 }
632
carl9170_get_tid(struct sk_buff * skb)633 static inline u16 carl9170_get_tid(struct sk_buff *skb)
634 {
635 return ieee80211_get_tid(carl9170_get_hdr(skb));
636 }
637
638 static inline struct ieee80211_vif *
carl9170_get_vif(struct carl9170_vif_info * priv)639 carl9170_get_vif(struct carl9170_vif_info *priv)
640 {
641 return container_of((void *)priv, struct ieee80211_vif, drv_priv);
642 }
643
644 /* Protected by ar->mutex or RCU */
carl9170_get_main_vif(struct ar9170 * ar)645 static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
646 {
647 struct carl9170_vif_info *cvif;
648
649 list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
650 if (cvif->active)
651 return carl9170_get_vif(cvif);
652 }
653
654 return NULL;
655 }
656
is_main_vif(struct ar9170 * ar,struct ieee80211_vif * vif)657 static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
658 {
659 bool ret;
660
661 rcu_read_lock();
662 ret = (carl9170_get_main_vif(ar) == vif);
663 rcu_read_unlock();
664 return ret;
665 }
666
667 #endif /* __CARL9170_H */
668