1 /*
2 * Copyright (c) 2010-2011 Atheros Communications Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #ifndef HTC_H
18 #define HTC_H
19
20 #include <linux/module.h>
21 #include <linux/usb.h>
22 #include <linux/firmware.h>
23 #include <linux/skbuff.h>
24 #include <linux/netdevice.h>
25 #include <linux/leds.h>
26 #include <linux/slab.h>
27 #include <net/mac80211.h>
28
29 #include "common.h"
30 #include "htc_hst.h"
31 #include "hif_usb.h"
32 #include "wmi.h"
33
34 #define ATH_STA_SHORT_CALINTERVAL 1000 /* 1 second */
35 #define ATH_AP_SHORT_CALINTERVAL 100 /* 100 ms */
36 #define ATH_ANI_POLLINTERVAL 100 /* 100 ms */
37 #define ATH_LONG_CALINTERVAL 30000 /* 30 seconds */
38 #define ATH_RESTART_CALINTERVAL 1200000 /* 20 minutes */
39
40 #define ATH_DEFAULT_BMISS_LIMIT 10
41 #define IEEE80211_MS_TO_TU(x) (((x) * 1000) / 1024)
42 #define TSF_TO_TU(_h, _l) \
43 ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))
44
45 extern struct ieee80211_ops ath9k_htc_ops;
46 extern int htc_modparam_nohwcrypt;
47
48 enum htc_phymode {
49 HTC_MODE_11NA = 0,
50 HTC_MODE_11NG = 1
51 };
52
53 enum htc_opmode {
54 HTC_M_STA = 1,
55 HTC_M_IBSS = 0,
56 HTC_M_AHDEMO = 3,
57 HTC_M_HOSTAP = 6,
58 HTC_M_MONITOR = 8,
59 HTC_M_WDS = 2
60 };
61
62 #define ATH9K_HTC_AMPDU 1
63 #define ATH9K_HTC_NORMAL 2
64 #define ATH9K_HTC_BEACON 3
65 #define ATH9K_HTC_MGMT 4
66
67 #define ATH9K_HTC_TX_CTSONLY 0x1
68 #define ATH9K_HTC_TX_RTSCTS 0x2
69
70 struct tx_frame_hdr {
71 u8 data_type;
72 u8 node_idx;
73 u8 vif_idx;
74 u8 tidno;
75 __be32 flags; /* ATH9K_HTC_TX_* */
76 u8 key_type;
77 u8 keyix;
78 u8 cookie;
79 u8 pad;
80 } __packed;
81
82 struct tx_mgmt_hdr {
83 u8 node_idx;
84 u8 vif_idx;
85 u8 tidno;
86 u8 flags;
87 u8 key_type;
88 u8 keyix;
89 u8 cookie;
90 u8 pad;
91 } __packed;
92
93 struct tx_beacon_header {
94 u8 vif_index;
95 u8 len_changed;
96 u16 rev;
97 } __packed;
98
99 #define MAX_TX_AMPDU_SUBFRAMES_9271 17
100 #define MAX_TX_AMPDU_SUBFRAMES_7010 22
101
102 struct ath9k_htc_cap_target {
103 __be32 ampdu_limit;
104 u8 ampdu_subframes;
105 u8 enable_coex;
106 u8 tx_chainmask;
107 u8 pad;
108 } __packed;
109
110 struct ath9k_htc_target_vif {
111 u8 index;
112 u8 opmode;
113 u8 myaddr[ETH_ALEN];
114 u8 ath_cap;
115 __be16 rtsthreshold;
116 u8 pad;
117 } __packed;
118
119 struct ath9k_htc_target_sta {
120 u8 macaddr[ETH_ALEN];
121 u8 bssid[ETH_ALEN];
122 u8 sta_index;
123 u8 vif_index;
124 u8 is_vif_sta;
125 __be16 flags;
126 __be16 htcap;
127 __be16 maxampdu;
128 u8 pad;
129 } __packed;
130
131 struct ath9k_htc_target_aggr {
132 u8 sta_index;
133 u8 tidno;
134 u8 aggr_enable;
135 u8 padding;
136 } __packed;
137
138 #define ATH_HTC_RATE_MAX 30
139
140 #define WLAN_RC_DS_FLAG 0x01
141 #define WLAN_RC_40_FLAG 0x02
142 #define WLAN_RC_SGI_FLAG 0x04
143 #define WLAN_RC_HT_FLAG 0x08
144
145 struct ath9k_htc_rateset {
146 u8 rs_nrates;
147 u8 rs_rates[ATH_HTC_RATE_MAX];
148 };
149
150 struct ath9k_htc_rate {
151 struct ath9k_htc_rateset legacy_rates;
152 struct ath9k_htc_rateset ht_rates;
153 } __packed;
154
155 struct ath9k_htc_target_rate {
156 u8 sta_index;
157 u8 isnew;
158 __be32 capflags;
159 struct ath9k_htc_rate rates;
160 };
161
162 struct ath9k_htc_target_rate_mask {
163 u8 vif_index;
164 u8 band;
165 __be32 mask;
166 u16 pad;
167 } __packed;
168
169 struct ath9k_htc_target_int_stats {
170 __be32 rx;
171 __be32 rxorn;
172 __be32 rxeol;
173 __be32 txurn;
174 __be32 txto;
175 __be32 cst;
176 } __packed;
177
178 struct ath9k_htc_target_tx_stats {
179 __be32 xretries;
180 __be32 fifoerr;
181 __be32 filtered;
182 __be32 timer_exp;
183 __be32 shortretries;
184 __be32 longretries;
185 __be32 qnull;
186 __be32 encap_fail;
187 __be32 nobuf;
188 } __packed;
189
190 struct ath9k_htc_target_rx_stats {
191 __be32 nobuf;
192 __be32 host_send;
193 __be32 host_done;
194 } __packed;
195
196 #define ATH9K_HTC_MAX_VIF 2
197 #define ATH9K_HTC_MAX_BCN_VIF 2
198
199 #define INC_VIF(_priv, _type) do { \
200 switch (_type) { \
201 case NL80211_IFTYPE_STATION: \
202 _priv->num_sta_vif++; \
203 break; \
204 case NL80211_IFTYPE_ADHOC: \
205 _priv->num_ibss_vif++; \
206 break; \
207 case NL80211_IFTYPE_AP: \
208 _priv->num_ap_vif++; \
209 break; \
210 default: \
211 break; \
212 } \
213 } while (0)
214
215 #define DEC_VIF(_priv, _type) do { \
216 switch (_type) { \
217 case NL80211_IFTYPE_STATION: \
218 _priv->num_sta_vif--; \
219 break; \
220 case NL80211_IFTYPE_ADHOC: \
221 _priv->num_ibss_vif--; \
222 break; \
223 case NL80211_IFTYPE_AP: \
224 _priv->num_ap_vif--; \
225 break; \
226 default: \
227 break; \
228 } \
229 } while (0)
230
231 struct ath9k_htc_vif {
232 u8 index;
233 u16 seq_no;
234 bool beacon_configured;
235 int bslot;
236 __le64 tsfadjust;
237 };
238
239 struct ath9k_vif_iter_data {
240 const u8 *hw_macaddr;
241 u8 mask[ETH_ALEN];
242 };
243
244 #define ATH9K_HTC_MAX_STA 8
245 #define ATH9K_HTC_MAX_TID 8
246
247 enum tid_aggr_state {
248 AGGR_STOP = 0,
249 AGGR_PROGRESS,
250 AGGR_START,
251 AGGR_OPERATIONAL
252 };
253
254 struct ath9k_htc_sta {
255 u8 index;
256 enum tid_aggr_state tid_state[ATH9K_HTC_MAX_TID];
257 };
258
259 #define ATH9K_HTC_RXBUF 256
260 #define HTC_RX_FRAME_HEADER_SIZE 40
261
262 struct ath9k_htc_rxbuf {
263 bool in_process;
264 struct sk_buff *skb;
265 struct ath_htc_rx_status rxstatus;
266 struct list_head list;
267 };
268
269 struct ath9k_htc_rx {
270 int last_rssi; /* FIXME: per-STA */
271 struct list_head rxbuf;
272 spinlock_t rxbuflock;
273 };
274
275 #define ATH9K_HTC_TX_CLEANUP_INTERVAL 50 /* ms */
276 #define ATH9K_HTC_TX_TIMEOUT_INTERVAL 3000 /* ms */
277 #define ATH9K_HTC_TX_RESERVE 10
278 #define ATH9K_HTC_TX_TIMEOUT_COUNT 40
279 #define ATH9K_HTC_TX_THRESHOLD (MAX_TX_BUF_NUM - ATH9K_HTC_TX_RESERVE)
280
281 #define ATH9K_HTC_OP_TX_QUEUES_STOP BIT(0)
282 #define ATH9K_HTC_OP_TX_DRAIN BIT(1)
283
284 struct ath9k_htc_tx {
285 u8 flags;
286 int queued_cnt;
287 struct sk_buff_head mgmt_ep_queue;
288 struct sk_buff_head cab_ep_queue;
289 struct sk_buff_head data_be_queue;
290 struct sk_buff_head data_bk_queue;
291 struct sk_buff_head data_vi_queue;
292 struct sk_buff_head data_vo_queue;
293 struct sk_buff_head tx_failed;
294 DECLARE_BITMAP(tx_slot, MAX_TX_BUF_NUM);
295 struct timer_list cleanup_timer;
296 spinlock_t tx_lock;
297 };
298
299 struct ath9k_htc_tx_ctl {
300 u8 type; /* ATH9K_HTC_* */
301 u8 epid;
302 u8 txok;
303 u8 sta_idx;
304 unsigned long timestamp;
305 };
306
HTC_SKB_CB(struct sk_buff * skb)307 static inline struct ath9k_htc_tx_ctl *HTC_SKB_CB(struct sk_buff *skb)
308 {
309 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
310
311 BUILD_BUG_ON(sizeof(struct ath9k_htc_tx_ctl) >
312 IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
313 return (struct ath9k_htc_tx_ctl *) &tx_info->driver_data;
314 }
315
316 #ifdef CONFIG_ATH9K_HTC_DEBUGFS
317
318 #define TX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.tx_stats.c++)
319 #define RX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.rx_stats.c++)
320 #define CAB_STAT_INC priv->debug.tx_stats.cab_queued++
321
322 #define TX_QSTAT_INC(q) (priv->debug.tx_stats.queue_stats[q]++)
323
324 void ath9k_htc_err_stat_rx(struct ath9k_htc_priv *priv,
325 struct ath_htc_rx_status *rxs);
326
327 struct ath_tx_stats {
328 u32 buf_queued;
329 u32 buf_completed;
330 u32 skb_queued;
331 u32 skb_success;
332 u32 skb_failed;
333 u32 cab_queued;
334 u32 queue_stats[WME_NUM_AC];
335 };
336
337 struct ath_rx_stats {
338 u32 skb_allocated;
339 u32 skb_completed;
340 u32 skb_dropped;
341 u32 err_crc;
342 u32 err_decrypt_crc;
343 u32 err_mic;
344 u32 err_pre_delim;
345 u32 err_post_delim;
346 u32 err_decrypt_busy;
347 u32 err_phy;
348 u32 err_phy_stats[ATH9K_PHYERR_MAX];
349 };
350
351 struct ath9k_debug {
352 struct dentry *debugfs_phy;
353 struct ath_tx_stats tx_stats;
354 struct ath_rx_stats rx_stats;
355 };
356
357 #else
358
359 #define TX_STAT_INC(c) do { } while (0)
360 #define RX_STAT_INC(c) do { } while (0)
361 #define CAB_STAT_INC do { } while (0)
362
363 #define TX_QSTAT_INC(c) do { } while (0)
364
ath9k_htc_err_stat_rx(struct ath9k_htc_priv * priv,struct ath_htc_rx_status * rxs)365 static inline void ath9k_htc_err_stat_rx(struct ath9k_htc_priv *priv,
366 struct ath_htc_rx_status *rxs)
367 {
368 }
369
370 #endif /* CONFIG_ATH9K_HTC_DEBUGFS */
371
372 #define ATH_LED_PIN_DEF 1
373 #define ATH_LED_PIN_9287 10
374 #define ATH_LED_PIN_9271 15
375 #define ATH_LED_PIN_7010 12
376
377 #define BSTUCK_THRESHOLD 10
378
379 /*
380 * Adjust these when the max. no of beaconing interfaces is
381 * increased.
382 */
383 #define DEFAULT_SWBA_RESPONSE 40 /* in TUs */
384 #define MIN_SWBA_RESPONSE 10 /* in TUs */
385
386 struct htc_beacon_config {
387 struct ieee80211_vif *bslot[ATH9K_HTC_MAX_BCN_VIF];
388 u16 beacon_interval;
389 u16 dtim_period;
390 u16 bmiss_timeout;
391 u32 bmiss_cnt;
392 };
393
394 struct ath_btcoex {
395 u32 bt_priority_cnt;
396 unsigned long bt_priority_time;
397 int bt_stomp_type; /* Types of BT stomping */
398 u32 btcoex_no_stomp;
399 u32 btcoex_period;
400 u32 btscan_no_stomp;
401 };
402
403 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
404 void ath9k_htc_init_btcoex(struct ath9k_htc_priv *priv, char *product);
405 void ath9k_htc_start_btcoex(struct ath9k_htc_priv *priv);
406 void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv);
407 #else
ath9k_htc_init_btcoex(struct ath9k_htc_priv * priv,char * product)408 static inline void ath9k_htc_init_btcoex(struct ath9k_htc_priv *priv, char *product)
409 {
410 }
ath9k_htc_start_btcoex(struct ath9k_htc_priv * priv)411 static inline void ath9k_htc_start_btcoex(struct ath9k_htc_priv *priv)
412 {
413 }
ath9k_htc_stop_btcoex(struct ath9k_htc_priv * priv)414 static inline void ath9k_htc_stop_btcoex(struct ath9k_htc_priv *priv)
415 {
416 }
417 #endif /* CONFIG_ATH9K_BTCOEX_SUPPORT */
418
419 #define OP_INVALID BIT(0)
420 #define OP_SCANNING BIT(1)
421 #define OP_ENABLE_BEACON BIT(2)
422 #define OP_BT_PRIORITY_DETECTED BIT(3)
423 #define OP_BT_SCAN BIT(4)
424 #define OP_ANI_RUNNING BIT(5)
425 #define OP_TSF_RESET BIT(6)
426
427 struct ath9k_htc_priv {
428 struct device *dev;
429 struct ieee80211_hw *hw;
430 struct ath_hw *ah;
431 struct htc_target *htc;
432 struct wmi *wmi;
433
434 u16 fw_version_major;
435 u16 fw_version_minor;
436
437 enum htc_endpoint_id wmi_cmd_ep;
438 enum htc_endpoint_id beacon_ep;
439 enum htc_endpoint_id cab_ep;
440 enum htc_endpoint_id uapsd_ep;
441 enum htc_endpoint_id mgmt_ep;
442 enum htc_endpoint_id data_be_ep;
443 enum htc_endpoint_id data_bk_ep;
444 enum htc_endpoint_id data_vi_ep;
445 enum htc_endpoint_id data_vo_ep;
446
447 u8 vif_slot;
448 u8 mon_vif_idx;
449 u8 sta_slot;
450 u8 vif_sta_pos[ATH9K_HTC_MAX_VIF];
451 u8 num_ibss_vif;
452 u8 num_sta_vif;
453 u8 num_sta_assoc_vif;
454 u8 num_ap_vif;
455
456 u16 op_flags;
457 u16 curtxpow;
458 u16 txpowlimit;
459 u16 nvifs;
460 u16 nstations;
461 bool rearm_ani;
462 bool reconfig_beacon;
463 unsigned int rxfilter;
464
465 struct ath9k_hw_cal_data caldata;
466 struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
467
468 spinlock_t beacon_lock;
469 struct htc_beacon_config cur_beacon_conf;
470
471 struct ath9k_htc_rx rx;
472 struct ath9k_htc_tx tx;
473
474 struct tasklet_struct swba_tasklet;
475 struct tasklet_struct rx_tasklet;
476 struct delayed_work ani_work;
477 struct tasklet_struct tx_failed_tasklet;
478 struct work_struct ps_work;
479 struct work_struct fatal_work;
480
481 struct mutex htc_pm_lock;
482 unsigned long ps_usecount;
483 bool ps_enabled;
484 bool ps_idle;
485
486 #ifdef CONFIG_MAC80211_LEDS
487 enum led_brightness brightness;
488 bool led_registered;
489 char led_name[32];
490 struct led_classdev led_cdev;
491 struct work_struct led_work;
492 #endif
493
494 int beaconq;
495 int cabq;
496 int hwq_map[WME_NUM_AC];
497
498 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
499 struct ath_btcoex btcoex;
500 #endif
501
502 struct delayed_work coex_period_work;
503 struct delayed_work duty_cycle_work;
504 #ifdef CONFIG_ATH9K_HTC_DEBUGFS
505 struct ath9k_debug debug;
506 #endif
507 struct mutex mutex;
508 };
509
ath_read_cachesize(struct ath_common * common,int * csz)510 static inline void ath_read_cachesize(struct ath_common *common, int *csz)
511 {
512 common->bus_ops->read_cachesize(common, csz);
513 }
514
515 void ath9k_htc_reset(struct ath9k_htc_priv *priv);
516
517 void ath9k_htc_assign_bslot(struct ath9k_htc_priv *priv,
518 struct ieee80211_vif *vif);
519 void ath9k_htc_remove_bslot(struct ath9k_htc_priv *priv,
520 struct ieee80211_vif *vif);
521 void ath9k_htc_set_tsfadjust(struct ath9k_htc_priv *priv,
522 struct ieee80211_vif *vif);
523 void ath9k_htc_beaconq_config(struct ath9k_htc_priv *priv);
524 void ath9k_htc_beacon_config(struct ath9k_htc_priv *priv,
525 struct ieee80211_vif *vif);
526 void ath9k_htc_beacon_reconfig(struct ath9k_htc_priv *priv);
527 void ath9k_htc_swba(struct ath9k_htc_priv *priv,
528 struct wmi_event_swba *swba);
529
530 void ath9k_htc_rxep(void *priv, struct sk_buff *skb,
531 enum htc_endpoint_id ep_id);
532 void ath9k_htc_txep(void *priv, struct sk_buff *skb, enum htc_endpoint_id ep_id,
533 bool txok);
534 void ath9k_htc_beaconep(void *drv_priv, struct sk_buff *skb,
535 enum htc_endpoint_id ep_id, bool txok);
536
537 int ath9k_htc_update_cap_target(struct ath9k_htc_priv *priv,
538 u8 enable_coex);
539 void ath9k_htc_ani_work(struct work_struct *work);
540 void ath9k_htc_start_ani(struct ath9k_htc_priv *priv);
541 void ath9k_htc_stop_ani(struct ath9k_htc_priv *priv);
542
543 int ath9k_tx_init(struct ath9k_htc_priv *priv);
544 int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
545 struct sk_buff *skb, u8 slot, bool is_cab);
546 void ath9k_tx_cleanup(struct ath9k_htc_priv *priv);
547 bool ath9k_htc_txq_setup(struct ath9k_htc_priv *priv, int subtype);
548 int ath9k_htc_cabq_setup(struct ath9k_htc_priv *priv);
549 int get_hw_qnum(u16 queue, int *hwq_map);
550 int ath_htc_txq_update(struct ath9k_htc_priv *priv, int qnum,
551 struct ath9k_tx_queue_info *qinfo);
552 void ath9k_htc_check_stop_queues(struct ath9k_htc_priv *priv);
553 void ath9k_htc_check_wake_queues(struct ath9k_htc_priv *priv);
554 int ath9k_htc_tx_get_slot(struct ath9k_htc_priv *priv);
555 void ath9k_htc_tx_clear_slot(struct ath9k_htc_priv *priv, int slot);
556 void ath9k_htc_tx_drain(struct ath9k_htc_priv *priv);
557 void ath9k_htc_txstatus(struct ath9k_htc_priv *priv, void *wmi_event);
558 void ath9k_tx_failed_tasklet(unsigned long data);
559 void ath9k_htc_tx_cleanup_timer(unsigned long data);
560
561 int ath9k_rx_init(struct ath9k_htc_priv *priv);
562 void ath9k_rx_cleanup(struct ath9k_htc_priv *priv);
563 void ath9k_host_rx_init(struct ath9k_htc_priv *priv);
564 void ath9k_rx_tasklet(unsigned long data);
565 u32 ath9k_htc_calcrxfilter(struct ath9k_htc_priv *priv);
566
567 void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv);
568 void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv);
569 void ath9k_ps_work(struct work_struct *work);
570 bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
571 enum ath9k_power_mode mode);
572
573 void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv);
574 void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw);
575 void ath9k_htc_radio_enable(struct ieee80211_hw *hw);
576 void ath9k_htc_radio_disable(struct ieee80211_hw *hw);
577
578 #ifdef CONFIG_MAC80211_LEDS
579 void ath9k_init_leds(struct ath9k_htc_priv *priv);
580 void ath9k_deinit_leds(struct ath9k_htc_priv *priv);
581 void ath9k_led_work(struct work_struct *work);
582 #else
ath9k_init_leds(struct ath9k_htc_priv * priv)583 static inline void ath9k_init_leds(struct ath9k_htc_priv *priv)
584 {
585 }
586
ath9k_deinit_leds(struct ath9k_htc_priv * priv)587 static inline void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
588 {
589 }
590
ath9k_led_work(struct work_struct * work)591 static inline void ath9k_led_work(struct work_struct *work)
592 {
593 }
594 #endif
595
596 int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
597 u16 devid, char *product, u32 drv_info);
598 void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug);
599 #ifdef CONFIG_PM
600 void ath9k_htc_suspend(struct htc_target *htc_handle);
601 int ath9k_htc_resume(struct htc_target *htc_handle);
602 #endif
603 #ifdef CONFIG_ATH9K_HTC_DEBUGFS
604 int ath9k_htc_init_debug(struct ath_hw *ah);
605 #else
ath9k_htc_init_debug(struct ath_hw * ah)606 static inline int ath9k_htc_init_debug(struct ath_hw *ah) { return 0; };
607 #endif /* CONFIG_ATH9K_HTC_DEBUGFS */
608
609 #endif /* HTC_H */
610