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
379 /* statistics */
380 unsigned int tx_dropped;
381 unsigned int tx_ack_failures;
382 unsigned int tx_fcs_errors;
383 unsigned int rx_dropped;
384 unsigned int rx_phy_errors;
385
386 /* EEPROM */
387 struct ar9170_eeprom eeprom;
388
389 /* tx queuing */
390 struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
391 struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
392 struct delayed_work tx_janitor;
393 unsigned long tx_janitor_last_run;
394 bool tx_schedule;
395
396 /* tx ampdu */
397 struct work_struct ampdu_work;
398 spinlock_t tx_ampdu_list_lock;
399 struct carl9170_sta_tid __rcu *tx_ampdu_iter;
400 struct list_head tx_ampdu_list;
401 atomic_t tx_ampdu_upload;
402 atomic_t tx_ampdu_scheduler;
403 atomic_t tx_total_pending;
404 atomic_t tx_total_queued;
405 unsigned int tx_ampdu_list_len;
406 int current_density;
407 int current_factor;
408 bool tx_ampdu_schedule;
409
410 /* internal memory management */
411 spinlock_t mem_lock;
412 unsigned long *mem_bitmap;
413 atomic_t mem_free_blocks;
414 atomic_t mem_allocs;
415
416 /* rxstream mpdu merge */
417 struct ar9170_rx_head rx_plcp;
418 bool rx_has_plcp;
419 struct sk_buff *rx_failover;
420 int rx_failover_missing;
421 u32 ampdu_ref;
422
423 /* FIFO for collecting outstanding BlockAckRequest */
424 struct list_head bar_list[__AR9170_NUM_TXQ];
425 spinlock_t bar_list_lock[__AR9170_NUM_TXQ];
426
427 #ifdef CONFIG_CARL9170_WPC
428 struct {
429 bool pbc_state;
430 struct input_dev *pbc;
431 char name[32];
432 char phys[32];
433 } wps;
434 #endif /* CONFIG_CARL9170_WPC */
435
436 #ifdef CONFIG_CARL9170_DEBUGFS
437 struct carl9170_debug debug;
438 struct dentry *debug_dir;
439 #endif /* CONFIG_CARL9170_DEBUGFS */
440
441 /* PSM */
442 struct work_struct ps_work;
443 struct {
444 unsigned int dtim_counter;
445 unsigned long last_beacon;
446 unsigned long last_action;
447 unsigned long last_slept;
448 unsigned int sleep_ms;
449 unsigned int off_override;
450 bool state;
451 } ps;
452
453 #ifdef CONFIG_CARL9170_HWRNG
454 # define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN
455 struct {
456 struct hwrng rng;
457 char name[30 + 1];
458 u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
459 unsigned int cache_idx;
460 } rng;
461 #endif /* CONFIG_CARL9170_HWRNG */
462
463 /* Must be last as it ends in a flexible-array member. */
464 union {
465 __le32 cmd_buf[PAYLOAD_MAX + 1];
466 struct carl9170_cmd cmd;
467 struct carl9170_rsp rsp;
468 };
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[IEEE80211_NUM_TIDS];
495 struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS];
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
__carl9170_set_state(struct ar9170 * ar,enum carl9170_device_state newstate)509 static inline void __carl9170_set_state(struct ar9170 *ar,
510 enum carl9170_device_state newstate)
511 {
512 ar->state = newstate;
513 }
514
carl9170_set_state(struct ar9170 * ar,enum carl9170_device_state newstate)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
carl9170_set_state_when(struct ar9170 * ar,enum carl9170_device_state min,enum carl9170_device_state newstate)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,
581 struct ieee80211_tx_control *control,
582 struct sk_buff *skb);
583 void carl9170_tx_janitor(struct work_struct *work);
584 void carl9170_tx_process_status(struct ar9170 *ar,
585 const struct carl9170_rsp *cmd);
586 void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
587 const bool success);
588 void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
589 void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
590 void carl9170_tx_scheduler(struct ar9170 *ar);
591 void carl9170_tx_get_skb(struct sk_buff *skb);
592 int carl9170_tx_put_skb(struct sk_buff *skb);
593 int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
594
595 /* LEDs */
596 #ifdef CONFIG_CARL9170_LEDS
597 int carl9170_led_register(struct ar9170 *ar);
598 void carl9170_led_unregister(struct ar9170 *ar);
599 #endif /* CONFIG_CARL9170_LEDS */
600 int carl9170_led_init(struct ar9170 *ar);
601 int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
602
603 /* PHY / RF */
604 int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
605 enum nl80211_channel_type bw);
606 int carl9170_get_noisefloor(struct ar9170 *ar);
607
608 /* FW */
609 int carl9170_parse_firmware(struct ar9170 *ar);
610
611 extern struct ieee80211_rate __carl9170_ratetable[];
612 extern int modparam_noht;
613
carl9170_get_priv(struct carl9170_vif * carl_vif)614 static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
615 {
616 return container_of(carl_vif, struct ar9170,
617 vif_priv[carl_vif->id]);
618 }
619
carl9170_get_hdr(struct sk_buff * skb)620 static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
621 {
622 return (void *)((struct _carl9170_tx_superframe *)
623 skb->data)->frame_data;
624 }
625
get_seq_h(struct ieee80211_hdr * hdr)626 static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
627 {
628 return le16_to_cpu(hdr->seq_ctrl) >> 4;
629 }
630
carl9170_get_seq(struct sk_buff * skb)631 static inline u16 carl9170_get_seq(struct sk_buff *skb)
632 {
633 return get_seq_h(carl9170_get_hdr(skb));
634 }
635
carl9170_get_tid(struct sk_buff * skb)636 static inline u16 carl9170_get_tid(struct sk_buff *skb)
637 {
638 return ieee80211_get_tid(carl9170_get_hdr(skb));
639 }
640
641 static inline struct ieee80211_vif *
carl9170_get_vif(struct carl9170_vif_info * priv)642 carl9170_get_vif(struct carl9170_vif_info *priv)
643 {
644 return container_of((void *)priv, struct ieee80211_vif, drv_priv);
645 }
646
647 /* Protected by ar->mutex or RCU */
carl9170_get_main_vif(struct ar9170 * ar)648 static inline struct ieee80211_vif *carl9170_get_main_vif(struct ar9170 *ar)
649 {
650 struct carl9170_vif_info *cvif;
651
652 list_for_each_entry_rcu(cvif, &ar->vif_list, list) {
653 if (cvif->active)
654 return carl9170_get_vif(cvif);
655 }
656
657 return NULL;
658 }
659
is_main_vif(struct ar9170 * ar,struct ieee80211_vif * vif)660 static inline bool is_main_vif(struct ar9170 *ar, struct ieee80211_vif *vif)
661 {
662 bool ret;
663
664 rcu_read_lock();
665 ret = (carl9170_get_main_vif(ar) == vif);
666 rcu_read_unlock();
667 return ret;
668 }
669
670 #endif /* __CARL9170_H */
671