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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
71static 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
78enum 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
103enum 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
117struct 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
168struct carl9170_tx_queue_stats {
169 unsigned int count;
170 unsigned int limit;
171 unsigned int len;
172};
173
174struct carl9170_vif {
175 unsigned int id;
176 struct ieee80211_vif __rcu *vif;
177};
178
179struct 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
192enum carl9170_device_features {
193 CARL9170_WPS_BUTTON = BIT(0),
194 CARL9170_ONE_LED = BIT(1),
195};
196
197#ifdef CONFIG_CARL9170_LEDS
198struct ar9170;
199
200struct 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
210enum 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
226enum 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
236struct 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
468enum carl9170_ps_off_override_reasons {
469 PS_OFF_VIF = BIT(0),
470 PS_OFF_BCN = BIT(1),
471};
472
473struct carl9170_bar_list_entry {
474 struct list_head list;
475 struct rcu_head head;
476 struct sk_buff *skb;
477};
478
479struct carl9170_ba_stats {
480 u8 ampdu_len;
481 u8 ampdu_ack_len;
482 bool clear;
483 bool req;
484};
485
486struct 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
495struct 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
506static inline void __carl9170_set_state(struct ar9170 *ar,
507 enum carl9170_device_state newstate)
508{
509 ar->state = newstate;
510}
511
512static 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
522static 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 */
534void *carl9170_alloc(size_t priv_size);
535int carl9170_register(struct ar9170 *ar);
536void carl9170_unregister(struct ar9170 *ar);
537void carl9170_free(struct ar9170 *ar);
538void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
539void carl9170_ps_check(struct ar9170 *ar);
540
541/* USB back-end */
542int carl9170_usb_open(struct ar9170 *ar);
543void carl9170_usb_stop(struct ar9170 *ar);
544void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
545void carl9170_usb_handle_tx_err(struct ar9170 *ar);
546int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
547 u32 plen, void *payload, u32 rlen, void *resp);
548int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
549 const bool free_buf);
550int carl9170_usb_restart(struct ar9170 *ar);
551void carl9170_usb_reset(struct ar9170 *ar);
552
553/* MAC */
554int carl9170_init_mac(struct ar9170 *ar);
555int carl9170_set_qos(struct ar9170 *ar);
556int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
557int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
558 const u8 *mac);
559int carl9170_set_operating_mode(struct ar9170 *ar);
560int carl9170_set_beacon_timers(struct ar9170 *ar);
561int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
562int carl9170_set_rts_cts_rate(struct ar9170 *ar);
563int carl9170_set_ampdu_settings(struct ar9170 *ar);
564int carl9170_set_slot_time(struct ar9170 *ar);
565int carl9170_set_mac_rates(struct ar9170 *ar);
566int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
567int 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);
569int carl9170_disable_key(struct ar9170 *ar, const u8 id);
570int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
571
572/* RX */
573void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
574void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
575
576/* TX */
577void carl9170_op_tx(struct ieee80211_hw *hw,
578 struct ieee80211_tx_control *control,
579 struct sk_buff *skb);
580void carl9170_tx_janitor(struct work_struct *work);
581void carl9170_tx_process_status(struct ar9170 *ar,
582 const struct carl9170_rsp *cmd);
583void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
584 const bool success);
585void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
586void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
587void carl9170_tx_scheduler(struct ar9170 *ar);
588void carl9170_tx_get_skb(struct sk_buff *skb);
589int carl9170_tx_put_skb(struct sk_buff *skb);
590int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
591
592/* LEDs */
593#ifdef CONFIG_CARL9170_LEDS
594int carl9170_led_register(struct ar9170 *ar);
595void carl9170_led_unregister(struct ar9170 *ar);
596#endif /* CONFIG_CARL9170_LEDS */
597int carl9170_led_init(struct ar9170 *ar);
598int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
599
600/* PHY / RF */
601int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
602 enum nl80211_channel_type bw);
603int carl9170_get_noisefloor(struct ar9170 *ar);
604
605/* FW */
606int carl9170_parse_firmware(struct ar9170 *ar);
607
608extern struct ieee80211_rate __carl9170_ratetable[];
609extern int modparam_noht;
610
611static 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
617static 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
623static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
624{
625 return le16_to_cpu(hdr->seq_ctrl) >> 4;
626}
627
628static inline u16 carl9170_get_seq(struct sk_buff *skb)
629{
630 return get_seq_h(carl9170_get_hdr(skb));
631}
632
633static inline u16 carl9170_get_tid(struct sk_buff *skb)
634{
635 return ieee80211_get_tid(carl9170_get_hdr(skb));
636}
637
638static inline struct ieee80211_vif *
639carl9170_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 */
645static 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
657static 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 */
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
71static const u8 ar9170_qmap[__AR9170_NUM_TXQ] = { 3, 2, 1, 0 };
72
73#define CARL9170_MAX_RX_BUFFER_SIZE 8192
74
75enum carl9170_device_state {
76 CARL9170_UNKNOWN_STATE,
77 CARL9170_STOPPED,
78 CARL9170_IDLE,
79 CARL9170_STARTED,
80};
81
82#define WME_BA_BMP_SIZE 64
83#define CARL9170_TX_USER_RATE_TRIES 3
84
85#define TID_TO_WME_AC(_tid) \
86 ((((_tid) == 0) || ((_tid) == 3)) ? IEEE80211_AC_BE : \
87 (((_tid) == 1) || ((_tid) == 2)) ? IEEE80211_AC_BK : \
88 (((_tid) == 4) || ((_tid) == 5)) ? IEEE80211_AC_VI : \
89 IEEE80211_AC_VO)
90
91#define SEQ_DIFF(_start, _seq) \
92 (((_start) - (_seq)) & 0x0fff)
93#define SEQ_PREV(_seq) \
94 (((_seq) - 1) & 0x0fff)
95#define SEQ_NEXT(_seq) \
96 (((_seq) + 1) & 0x0fff)
97#define BAW_WITHIN(_start, _bawsz, _seqno) \
98 ((((_seqno) - (_start)) & 0xfff) < (_bawsz))
99
100enum carl9170_tid_state {
101 CARL9170_TID_STATE_INVALID,
102 CARL9170_TID_STATE_KILLED,
103 CARL9170_TID_STATE_SHUTDOWN,
104 CARL9170_TID_STATE_SUSPEND,
105 CARL9170_TID_STATE_PROGRESS,
106 CARL9170_TID_STATE_IDLE,
107 CARL9170_TID_STATE_XMIT,
108};
109
110#define CARL9170_BAW_BITS (2 * WME_BA_BMP_SIZE)
111#define CARL9170_BAW_SIZE (BITS_TO_LONGS(CARL9170_BAW_BITS))
112#define CARL9170_BAW_LEN (DIV_ROUND_UP(CARL9170_BAW_BITS, BITS_PER_BYTE))
113
114struct carl9170_sta_tid {
115 /* must be the first entry! */
116 struct list_head list;
117
118 /* temporary list for RCU unlink procedure */
119 struct list_head tmp_list;
120
121 /* lock for the following data structures */
122 spinlock_t lock;
123
124 unsigned int counter;
125 enum carl9170_tid_state state;
126 u8 tid; /* TID number ( 0 - 15 ) */
127 u16 max; /* max. AMPDU size */
128
129 u16 snx; /* awaiting _next_ frame */
130 u16 hsn; /* highest _queued_ sequence */
131 u16 bsn; /* base of the tx/agg bitmap */
132 unsigned long bitmap[CARL9170_BAW_SIZE];
133
134 /* Preaggregation reorder queue */
135 struct sk_buff_head queue;
136
137 struct ieee80211_sta *sta;
138 struct ieee80211_vif *vif;
139};
140
141#define CARL9170_QUEUE_TIMEOUT 256
142#define CARL9170_BUMP_QUEUE 1000
143#define CARL9170_TX_TIMEOUT 2500
144#define CARL9170_JANITOR_DELAY 128
145#define CARL9170_QUEUE_STUCK_TIMEOUT 5500
146#define CARL9170_STAT_WORK 30000
147
148#define CARL9170_NUM_TX_AGG_MAX 30
149
150/*
151 * Tradeoff between stability/latency and speed.
152 *
153 * AR9170_TXQ_DEPTH is devised by dividing the amount of available
154 * tx buffers with the size of a full ethernet frame + overhead.
155 *
156 * Naturally: The higher the limit, the faster the device CAN send.
157 * However, even a slight over-commitment at the wrong time and the
158 * hardware is doomed to send all already-queued frames at suboptimal
159 * rates. This in turn leads to an enormous amount of unsuccessful
160 * retries => Latency goes up, whereas the throughput goes down. CRASH!
161 */
162#define CARL9170_NUM_TX_LIMIT_HARD ((AR9170_TXQ_DEPTH * 3) / 2)
163#define CARL9170_NUM_TX_LIMIT_SOFT (AR9170_TXQ_DEPTH)
164
165struct carl9170_tx_queue_stats {
166 unsigned int count;
167 unsigned int limit;
168 unsigned int len;
169};
170
171struct carl9170_vif {
172 unsigned int id;
173 struct ieee80211_vif __rcu *vif;
174};
175
176struct carl9170_vif_info {
177 struct list_head list;
178 bool active;
179 unsigned int id;
180 struct sk_buff *beacon;
181 bool enable_beacon;
182};
183
184#define AR9170_NUM_RX_URBS 16
185#define AR9170_NUM_RX_URBS_MUL 2
186#define AR9170_NUM_TX_URBS 8
187#define AR9170_NUM_RX_URBS_POOL (AR9170_NUM_RX_URBS_MUL * AR9170_NUM_RX_URBS)
188
189enum carl9170_device_features {
190 CARL9170_WPS_BUTTON = BIT(0),
191 CARL9170_ONE_LED = BIT(1),
192};
193
194#ifdef CONFIG_CARL9170_LEDS
195struct ar9170;
196
197struct carl9170_led {
198 struct ar9170 *ar;
199 struct led_classdev l;
200 char name[32];
201 unsigned int toggled;
202 bool last_state;
203 bool registered;
204};
205#endif /* CONFIG_CARL9170_LEDS */
206
207enum carl9170_restart_reasons {
208 CARL9170_RR_NO_REASON = 0,
209 CARL9170_RR_FATAL_FIRMWARE_ERROR,
210 CARL9170_RR_TOO_MANY_FIRMWARE_ERRORS,
211 CARL9170_RR_WATCHDOG,
212 CARL9170_RR_STUCK_TX,
213 CARL9170_RR_UNRESPONSIVE_DEVICE,
214 CARL9170_RR_COMMAND_TIMEOUT,
215 CARL9170_RR_TOO_MANY_PHY_ERRORS,
216 CARL9170_RR_LOST_RSP,
217 CARL9170_RR_INVALID_RSP,
218 CARL9170_RR_USER_REQUEST,
219
220 __CARL9170_RR_LAST,
221};
222
223enum carl9170_erp_modes {
224 CARL9170_ERP_INVALID,
225 CARL9170_ERP_AUTO,
226 CARL9170_ERP_MAC80211,
227 CARL9170_ERP_OFF,
228 CARL9170_ERP_CTS,
229 CARL9170_ERP_RTS,
230 __CARL9170_ERP_NUM,
231};
232
233struct ar9170 {
234 struct ath_common common;
235 struct ieee80211_hw *hw;
236 struct mutex mutex;
237 enum carl9170_device_state state;
238 spinlock_t state_lock;
239 enum carl9170_restart_reasons last_reason;
240 bool registered;
241
242 /* USB */
243 struct usb_device *udev;
244 struct usb_interface *intf;
245 struct usb_anchor rx_anch;
246 struct usb_anchor rx_work;
247 struct usb_anchor rx_pool;
248 struct usb_anchor tx_wait;
249 struct usb_anchor tx_anch;
250 struct usb_anchor tx_cmd;
251 struct usb_anchor tx_err;
252 struct tasklet_struct usb_tasklet;
253 atomic_t tx_cmd_urbs;
254 atomic_t tx_anch_urbs;
255 atomic_t rx_anch_urbs;
256 atomic_t rx_work_urbs;
257 atomic_t rx_pool_urbs;
258 kernel_ulong_t features;
259 bool usb_ep_cmd_is_bulk;
260
261 /* firmware settings */
262 struct completion fw_load_wait;
263 struct completion fw_boot_wait;
264 struct {
265 const struct carl9170fw_desc_head *desc;
266 const struct firmware *fw;
267 unsigned int offset;
268 unsigned int address;
269 unsigned int cmd_bufs;
270 unsigned int api_version;
271 unsigned int vif_num;
272 unsigned int err_counter;
273 unsigned int bug_counter;
274 u32 beacon_addr;
275 unsigned int beacon_max_len;
276 bool rx_stream;
277 bool tx_stream;
278 bool rx_filter;
279 bool hw_counters;
280 unsigned int mem_blocks;
281 unsigned int mem_block_size;
282 unsigned int rx_size;
283 unsigned int tx_seq_table;
284 bool ba_filter;
285 bool disable_offload_fw;
286 } fw;
287
288 /* interface configuration combinations */
289 struct ieee80211_iface_limit if_comb_limits[1];
290 struct ieee80211_iface_combination if_combs[1];
291
292 /* reset / stuck frames/queue detection */
293 struct work_struct restart_work;
294 struct work_struct ping_work;
295 unsigned int restart_counter;
296 unsigned long queue_stop_timeout[__AR9170_NUM_TXQ];
297 unsigned long max_queue_stop_timeout[__AR9170_NUM_TXQ];
298 bool needs_full_reset;
299 bool force_usb_reset;
300 atomic_t pending_restarts;
301
302 /* interface mode settings */
303 struct list_head vif_list;
304 unsigned long vif_bitmap;
305 unsigned int vifs;
306 struct carl9170_vif vif_priv[AR9170_MAX_VIRTUAL_MAC];
307
308 /* beaconing */
309 spinlock_t beacon_lock;
310 unsigned int global_pretbtt;
311 unsigned int global_beacon_int;
312 struct carl9170_vif_info __rcu *beacon_iter;
313 unsigned int beacon_enabled;
314
315 /* cryptographic engine */
316 u64 usedkeys;
317 bool rx_software_decryption;
318 bool disable_offload;
319
320 /* filter settings */
321 u64 cur_mc_hash;
322 u32 cur_filter;
323 unsigned int filter_state;
324 unsigned int rx_filter_caps;
325 bool sniffer_enabled;
326
327 /* MAC */
328 enum carl9170_erp_modes erp_mode;
329
330 /* PHY */
331 struct ieee80211_channel *channel;
332 unsigned int num_channels;
333 int noise[4];
334 unsigned int chan_fail;
335 unsigned int total_chan_fail;
336 u8 heavy_clip;
337 u8 ht_settings;
338 struct {
339 u64 active; /* usec */
340 u64 cca; /* usec */
341 u64 tx_time; /* usec */
342 u64 rx_total;
343 u64 rx_overrun;
344 } tally;
345 struct delayed_work stat_work;
346 struct survey_info *survey;
347
348 /* power calibration data */
349 u8 power_5G_leg[4];
350 u8 power_2G_cck[4];
351 u8 power_2G_ofdm[4];
352 u8 power_5G_ht20[8];
353 u8 power_5G_ht40[8];
354 u8 power_2G_ht20[8];
355 u8 power_2G_ht40[8];
356
357#ifdef CONFIG_CARL9170_LEDS
358 /* LED */
359 struct delayed_work led_work;
360 struct carl9170_led leds[AR9170_NUM_LEDS];
361#endif /* CONFIG_CARL9170_LEDS */
362
363 /* qos queue settings */
364 spinlock_t tx_stats_lock;
365 struct carl9170_tx_queue_stats tx_stats[__AR9170_NUM_TXQ];
366 struct ieee80211_tx_queue_params edcf[5];
367 struct completion tx_flush;
368
369 /* CMD */
370 int cmd_seq;
371 int readlen;
372 u8 *readbuf;
373 spinlock_t cmd_lock;
374 struct completion cmd_wait;
375 union {
376 __le32 cmd_buf[PAYLOAD_MAX + 1];
377 struct carl9170_cmd cmd;
378 struct carl9170_rsp rsp;
379 };
380
381 /* statistics */
382 unsigned int tx_dropped;
383 unsigned int tx_ack_failures;
384 unsigned int tx_fcs_errors;
385 unsigned int rx_dropped;
386
387 /* EEPROM */
388 struct ar9170_eeprom eeprom;
389
390 /* tx queuing */
391 struct sk_buff_head tx_pending[__AR9170_NUM_TXQ];
392 struct sk_buff_head tx_status[__AR9170_NUM_TXQ];
393 struct delayed_work tx_janitor;
394 unsigned long tx_janitor_last_run;
395 bool tx_schedule;
396
397 /* tx ampdu */
398 struct work_struct ampdu_work;
399 spinlock_t tx_ampdu_list_lock;
400 struct carl9170_sta_tid __rcu *tx_ampdu_iter;
401 struct list_head tx_ampdu_list;
402 atomic_t tx_ampdu_upload;
403 atomic_t tx_ampdu_scheduler;
404 atomic_t tx_total_pending;
405 atomic_t tx_total_queued;
406 unsigned int tx_ampdu_list_len;
407 int current_density;
408 int current_factor;
409 bool tx_ampdu_schedule;
410
411 /* internal memory management */
412 spinlock_t mem_lock;
413 unsigned long *mem_bitmap;
414 atomic_t mem_free_blocks;
415 atomic_t mem_allocs;
416
417 /* rxstream mpdu merge */
418 struct ar9170_rx_head rx_plcp;
419 bool rx_has_plcp;
420 struct sk_buff *rx_failover;
421 int rx_failover_missing;
422 u32 ampdu_ref;
423
424 /* FIFO for collecting outstanding BlockAckRequest */
425 struct list_head bar_list[__AR9170_NUM_TXQ];
426 spinlock_t bar_list_lock[__AR9170_NUM_TXQ];
427
428#ifdef CONFIG_CARL9170_WPC
429 struct {
430 bool pbc_state;
431 struct input_dev *pbc;
432 char name[32];
433 char phys[32];
434 } wps;
435#endif /* CONFIG_CARL9170_WPC */
436
437#ifdef CONFIG_CARL9170_DEBUGFS
438 struct carl9170_debug debug;
439 struct dentry *debug_dir;
440#endif /* CONFIG_CARL9170_DEBUGFS */
441
442 /* PSM */
443 struct work_struct ps_work;
444 struct {
445 unsigned int dtim_counter;
446 unsigned long last_beacon;
447 unsigned long last_action;
448 unsigned long last_slept;
449 unsigned int sleep_ms;
450 unsigned int off_override;
451 bool state;
452 } ps;
453
454#ifdef CONFIG_CARL9170_HWRNG
455# define CARL9170_HWRNG_CACHE_SIZE CARL9170_MAX_CMD_PAYLOAD_LEN
456 struct {
457 struct hwrng rng;
458 bool initialized;
459 char name[30 + 1];
460 u16 cache[CARL9170_HWRNG_CACHE_SIZE / sizeof(u16)];
461 unsigned int cache_idx;
462 } rng;
463#endif /* CONFIG_CARL9170_HWRNG */
464};
465
466enum carl9170_ps_off_override_reasons {
467 PS_OFF_VIF = BIT(0),
468 PS_OFF_BCN = BIT(1),
469};
470
471struct carl9170_bar_list_entry {
472 struct list_head list;
473 struct rcu_head head;
474 struct sk_buff *skb;
475};
476
477struct carl9170_ba_stats {
478 u8 ampdu_len;
479 u8 ampdu_ack_len;
480 bool clear;
481 bool req;
482};
483
484struct carl9170_sta_info {
485 bool ht_sta;
486 bool sleeping;
487 atomic_t pending_frames;
488 unsigned int ampdu_max_len;
489 struct carl9170_sta_tid __rcu *agg[IEEE80211_NUM_TIDS];
490 struct carl9170_ba_stats stats[IEEE80211_NUM_TIDS];
491};
492
493struct carl9170_tx_info {
494 unsigned long timeout;
495 struct ar9170 *ar;
496 struct kref ref;
497};
498
499#define CHK_DEV_STATE(a, s) (((struct ar9170 *)a)->state >= (s))
500#define IS_INITIALIZED(a) (CHK_DEV_STATE(a, CARL9170_STOPPED))
501#define IS_ACCEPTING_CMD(a) (CHK_DEV_STATE(a, CARL9170_IDLE))
502#define IS_STARTED(a) (CHK_DEV_STATE(a, CARL9170_STARTED))
503
504static inline void __carl9170_set_state(struct ar9170 *ar,
505 enum carl9170_device_state newstate)
506{
507 ar->state = newstate;
508}
509
510static inline void carl9170_set_state(struct ar9170 *ar,
511 enum carl9170_device_state newstate)
512{
513 unsigned long flags;
514
515 spin_lock_irqsave(&ar->state_lock, flags);
516 __carl9170_set_state(ar, newstate);
517 spin_unlock_irqrestore(&ar->state_lock, flags);
518}
519
520static inline void carl9170_set_state_when(struct ar9170 *ar,
521 enum carl9170_device_state min, enum carl9170_device_state newstate)
522{
523 unsigned long flags;
524
525 spin_lock_irqsave(&ar->state_lock, flags);
526 if (CHK_DEV_STATE(ar, min))
527 __carl9170_set_state(ar, newstate);
528 spin_unlock_irqrestore(&ar->state_lock, flags);
529}
530
531/* exported interface */
532void *carl9170_alloc(size_t priv_size);
533int carl9170_register(struct ar9170 *ar);
534void carl9170_unregister(struct ar9170 *ar);
535void carl9170_free(struct ar9170 *ar);
536void carl9170_restart(struct ar9170 *ar, const enum carl9170_restart_reasons r);
537void carl9170_ps_check(struct ar9170 *ar);
538
539/* USB back-end */
540int carl9170_usb_open(struct ar9170 *ar);
541void carl9170_usb_stop(struct ar9170 *ar);
542void carl9170_usb_tx(struct ar9170 *ar, struct sk_buff *skb);
543void carl9170_usb_handle_tx_err(struct ar9170 *ar);
544int carl9170_exec_cmd(struct ar9170 *ar, const enum carl9170_cmd_oids,
545 u32 plen, void *payload, u32 rlen, void *resp);
546int __carl9170_exec_cmd(struct ar9170 *ar, struct carl9170_cmd *cmd,
547 const bool free_buf);
548int carl9170_usb_restart(struct ar9170 *ar);
549void carl9170_usb_reset(struct ar9170 *ar);
550
551/* MAC */
552int carl9170_init_mac(struct ar9170 *ar);
553int carl9170_set_qos(struct ar9170 *ar);
554int carl9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
555int carl9170_mod_virtual_mac(struct ar9170 *ar, const unsigned int id,
556 const u8 *mac);
557int carl9170_set_operating_mode(struct ar9170 *ar);
558int carl9170_set_beacon_timers(struct ar9170 *ar);
559int carl9170_set_dyn_sifs_ack(struct ar9170 *ar);
560int carl9170_set_rts_cts_rate(struct ar9170 *ar);
561int carl9170_set_ampdu_settings(struct ar9170 *ar);
562int carl9170_set_slot_time(struct ar9170 *ar);
563int carl9170_set_mac_rates(struct ar9170 *ar);
564int carl9170_set_hwretry_limit(struct ar9170 *ar, const u32 max_retry);
565int carl9170_upload_key(struct ar9170 *ar, const u8 id, const u8 *mac,
566 const u8 ktype, const u8 keyidx, const u8 *keydata, const int keylen);
567int carl9170_disable_key(struct ar9170 *ar, const u8 id);
568int carl9170_set_mac_tpc(struct ar9170 *ar, struct ieee80211_channel *channel);
569
570/* RX */
571void carl9170_rx(struct ar9170 *ar, void *buf, unsigned int len);
572void carl9170_handle_command_response(struct ar9170 *ar, void *buf, u32 len);
573
574/* TX */
575void carl9170_op_tx(struct ieee80211_hw *hw,
576 struct ieee80211_tx_control *control,
577 struct sk_buff *skb);
578void carl9170_tx_janitor(struct work_struct *work);
579void carl9170_tx_process_status(struct ar9170 *ar,
580 const struct carl9170_rsp *cmd);
581void carl9170_tx_status(struct ar9170 *ar, struct sk_buff *skb,
582 const bool success);
583void carl9170_tx_callback(struct ar9170 *ar, struct sk_buff *skb);
584void carl9170_tx_drop(struct ar9170 *ar, struct sk_buff *skb);
585void carl9170_tx_scheduler(struct ar9170 *ar);
586void carl9170_tx_get_skb(struct sk_buff *skb);
587int carl9170_tx_put_skb(struct sk_buff *skb);
588int carl9170_update_beacon(struct ar9170 *ar, const bool submit);
589
590/* LEDs */
591#ifdef CONFIG_CARL9170_LEDS
592int carl9170_led_register(struct ar9170 *ar);
593void carl9170_led_unregister(struct ar9170 *ar);
594#endif /* CONFIG_CARL9170_LEDS */
595int carl9170_led_init(struct ar9170 *ar);
596int carl9170_led_set_state(struct ar9170 *ar, const u32 led_state);
597
598/* PHY / RF */
599int carl9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
600 enum nl80211_channel_type bw);
601int carl9170_get_noisefloor(struct ar9170 *ar);
602
603/* FW */
604int carl9170_parse_firmware(struct ar9170 *ar);
605
606extern struct ieee80211_rate __carl9170_ratetable[];
607extern int modparam_noht;
608
609static inline struct ar9170 *carl9170_get_priv(struct carl9170_vif *carl_vif)
610{
611 return container_of(carl_vif, struct ar9170,
612 vif_priv[carl_vif->id]);
613}
614
615static inline struct ieee80211_hdr *carl9170_get_hdr(struct sk_buff *skb)
616{
617 return (void *)((struct _carl9170_tx_superframe *)
618 skb->data)->frame_data;
619}
620
621static inline u16 get_seq_h(struct ieee80211_hdr *hdr)
622{
623 return le16_to_cpu(hdr->seq_ctrl) >> 4;
624}
625
626static inline u16 carl9170_get_seq(struct sk_buff *skb)
627{
628 return get_seq_h(carl9170_get_hdr(skb));
629}
630
631static inline u16 get_tid_h(struct ieee80211_hdr *hdr)
632{
633 return (ieee80211_get_qos_ctl(hdr))[0] & IEEE80211_QOS_CTL_TID_MASK;
634}
635
636static inline u16 carl9170_get_tid(struct sk_buff *skb)
637{
638 return get_tid_h(carl9170_get_hdr(skb));
639}
640
641static inline struct ieee80211_vif *
642carl9170_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 */
648static 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
660static 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 */