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