2 * Copyright (c) 2008-2009 Atheros Communications Inc.
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.
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.
20 #include <linux/etherdevice.h>
21 #include <linux/device.h>
22 #include <linux/leds.h>
28 * Header for the ath9k.ko driver core *only* -- hw code nor any other driver
29 * should rely on this file or its contents.
34 /* Macro to expand scalars to 64-bit objects */
36 #define ito64(x) (sizeof(x) == 1) ? \
37 (((unsigned long long int)(x)) & (0xff)) : \
39 (((unsigned long long int)(x)) & 0xffff) : \
41 (((unsigned long long int)(x)) & 0xffffffff) : \
42 (unsigned long long int)(x))
44 /* increment with wrap-around */
45 #define INCR(_l, _sz) do { \
47 (_l) &= ((_sz) - 1); \
50 /* decrement with wrap-around */
51 #define DECR(_l, _sz) do { \
53 (_l) &= ((_sz) - 1); \
56 #define A_MAX(a, b) ((a) > (b) ? (a) : (b))
58 #define TSF_TO_TU(_h,_l) \
59 ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))
61 #define ATH_TXQ_SETUP(sc, i) ((sc)->tx.txqsetup & (1<<i))
69 /*************************/
70 /* Descriptor Management */
71 /*************************/
73 #define ATH_TXBUF_RESET(_bf) do { \
74 (_bf)->bf_stale = false; \
75 (_bf)->bf_lastbf = NULL; \
76 (_bf)->bf_next = NULL; \
77 memset(&((_bf)->bf_state), 0, \
78 sizeof(struct ath_buf_state)); \
81 #define ATH_RXBUF_RESET(_bf) do { \
82 (_bf)->bf_stale = false; \
86 * enum buffer_type - Buffer type flags
88 * @BUF_HT: Send this buffer using HT capabilities
89 * @BUF_AMPDU: This buffer is an ampdu, as part of an aggregate (during TX)
90 * @BUF_AGGR: Indicates whether the buffer can be aggregated
91 * (used in aggregation scheduling)
92 * @BUF_RETRY: Indicates whether the buffer is retried
93 * @BUF_XRETRY: To denote excessive retries of the buffer
103 #define bf_nframes bf_state.bfs_nframes
104 #define bf_al bf_state.bfs_al
105 #define bf_frmlen bf_state.bfs_frmlen
106 #define bf_retries bf_state.bfs_retries
107 #define bf_seqno bf_state.bfs_seqno
108 #define bf_tidno bf_state.bfs_tidno
109 #define bf_keyix bf_state.bfs_keyix
110 #define bf_keytype bf_state.bfs_keytype
111 #define bf_isht(bf) (bf->bf_state.bf_type & BUF_HT)
112 #define bf_isampdu(bf) (bf->bf_state.bf_type & BUF_AMPDU)
113 #define bf_isaggr(bf) (bf->bf_state.bf_type & BUF_AGGR)
114 #define bf_isretried(bf) (bf->bf_state.bf_type & BUF_RETRY)
115 #define bf_isxretried(bf) (bf->bf_state.bf_type & BUF_XRETRY)
118 struct ath_desc
*dd_desc
;
119 dma_addr_t dd_desc_paddr
;
121 struct ath_buf
*dd_bufptr
;
124 int ath_descdma_setup(struct ath_softc
*sc
, struct ath_descdma
*dd
,
125 struct list_head
*head
, const char *name
,
126 int nbuf
, int ndesc
);
127 void ath_descdma_cleanup(struct ath_softc
*sc
, struct ath_descdma
*dd
,
128 struct list_head
*head
);
134 #define ATH_MAX_ANTENNA 3
135 #define ATH_RXBUF 512
136 #define ATH_TXBUF 512
137 #define ATH_TXMAXTRY 13
138 #define ATH_MGT_TXMAXTRY 4
140 #define TID_TO_WME_AC(_tid) \
141 ((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE : \
142 (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK : \
143 (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI : \
146 #define ADDBA_EXCHANGE_ATTEMPTS 10
147 #define ATH_AGGR_DELIM_SZ 4
148 #define ATH_AGGR_MINPLEN 256 /* in bytes, minimum packet length */
149 /* number of delimiters for encryption padding */
150 #define ATH_AGGR_ENCRYPTDELIM 10
151 /* minimum h/w qdepth to be sustained to maximize aggregation */
152 #define ATH_AGGR_MIN_QDEPTH 2
153 #define ATH_AMPDU_SUBFRAME_DEFAULT 32
155 #define IEEE80211_SEQ_SEQ_SHIFT 4
156 #define IEEE80211_SEQ_MAX 4096
157 #define IEEE80211_WEP_IVLEN 3
158 #define IEEE80211_WEP_KIDLEN 1
159 #define IEEE80211_WEP_CRCLEN 4
160 #define IEEE80211_MAX_MPDU_LEN (3840 + FCS_LEN + \
161 (IEEE80211_WEP_IVLEN + \
162 IEEE80211_WEP_KIDLEN + \
163 IEEE80211_WEP_CRCLEN))
165 /* return whether a bit at index _n in bitmap _bm is set
166 * _sz is the size of the bitmap */
167 #define ATH_BA_ISSET(_bm, _n) (((_n) < (WME_BA_BMP_SIZE)) && \
168 ((_bm)[(_n) >> 5] & (1 << ((_n) & 31))))
170 /* return block-ack bitmap index given sequence and starting sequence */
171 #define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_MAX - 1))
173 /* returns delimiter padding required given the packet length */
174 #define ATH_AGGR_GET_NDELIM(_len) \
175 (((((_len) + ATH_AGGR_DELIM_SZ) < ATH_AGGR_MINPLEN) ? \
176 (ATH_AGGR_MINPLEN - (_len) - ATH_AGGR_DELIM_SZ) : 0) >> 2)
178 #define BAW_WITHIN(_start, _bawsz, _seqno) \
179 ((((_seqno) - (_start)) & 4095) < (_bawsz))
181 #define ATH_AN_2_TID(_an, _tidno) (&(_an)->tid[(_tidno)])
183 #define ATH_TX_COMPLETE_POLL_INT 1000
185 enum ATH_AGGR_STATUS
{
194 struct list_head axq_q
;
198 bool axq_tx_inprogress
;
199 struct list_head axq_acq
;
202 #define AGGR_CLEANUP BIT(1)
203 #define AGGR_ADDBA_COMPLETE BIT(2)
204 #define AGGR_ADDBA_PROGRESS BIT(3)
206 struct ath_tx_control
{
209 enum ath9k_internal_frame_type frame_type
;
212 #define ATH_TX_ERROR 0x01
213 #define ATH_TX_XRETRY 0x02
214 #define ATH_TX_BAR 0x04
219 int hwq_map
[ATH9K_WME_AC_VO
+1];
220 spinlock_t txbuflock
;
221 struct list_head txbuf
;
222 struct ath_txq txq
[ATH9K_NUM_TX_QUEUES
];
223 struct ath_descdma txdma
;
227 struct sk_buff_head rx_fifo
;
228 struct sk_buff_head rx_buffers
;
236 unsigned int rxfilter
;
237 spinlock_t rxflushlock
;
238 spinlock_t rxbuflock
;
239 struct list_head rxbuf
;
240 struct ath_descdma rxdma
;
241 struct ath_buf
*rx_bufptr
;
242 struct ath_rx_edma rx_edma
[ATH9K_RX_QUEUE_MAX
];
245 int ath_startrecv(struct ath_softc
*sc
);
246 bool ath_stoprecv(struct ath_softc
*sc
);
247 void ath_flushrecv(struct ath_softc
*sc
);
248 u32
ath_calcrxfilter(struct ath_softc
*sc
);
249 int ath_rx_init(struct ath_softc
*sc
, int nbufs
);
250 void ath_rx_cleanup(struct ath_softc
*sc
);
251 int ath_rx_tasklet(struct ath_softc
*sc
, int flush
, bool hp
);
252 struct ath_txq
*ath_txq_setup(struct ath_softc
*sc
, int qtype
, int subtype
);
253 void ath_tx_cleanupq(struct ath_softc
*sc
, struct ath_txq
*txq
);
254 int ath_tx_setup(struct ath_softc
*sc
, int haltype
);
255 void ath_drain_all_txq(struct ath_softc
*sc
, bool retry_tx
);
256 void ath_draintxq(struct ath_softc
*sc
,
257 struct ath_txq
*txq
, bool retry_tx
);
258 void ath_tx_node_init(struct ath_softc
*sc
, struct ath_node
*an
);
259 void ath_tx_node_cleanup(struct ath_softc
*sc
, struct ath_node
*an
);
260 void ath_txq_schedule(struct ath_softc
*sc
, struct ath_txq
*txq
);
261 int ath_tx_init(struct ath_softc
*sc
, int nbufs
);
262 void ath_tx_cleanup(struct ath_softc
*sc
);
263 struct ath_txq
*ath_test_get_txq(struct ath_softc
*sc
, struct sk_buff
*skb
);
264 int ath_txq_update(struct ath_softc
*sc
, int qnum
,
265 struct ath9k_tx_queue_info
*q
);
266 int ath_tx_start(struct ieee80211_hw
*hw
, struct sk_buff
*skb
,
267 struct ath_tx_control
*txctl
);
268 void ath_tx_tasklet(struct ath_softc
*sc
);
269 void ath_tx_cabq(struct ieee80211_hw
*hw
, struct sk_buff
*skb
);
270 bool ath_tx_aggr_check(struct ath_softc
*sc
, struct ath_node
*an
, u8 tidno
);
271 void ath_tx_aggr_start(struct ath_softc
*sc
, struct ieee80211_sta
*sta
,
273 void ath_tx_aggr_stop(struct ath_softc
*sc
, struct ieee80211_sta
*sta
, u16 tid
);
274 void ath_tx_aggr_resume(struct ath_softc
*sc
, struct ieee80211_sta
*sta
, u16 tid
);
275 void ath9k_enable_ps(struct ath_softc
*sc
);
283 __le64 tsf_adjust
; /* TSF adjustment for staggered beacons */
284 enum nl80211_iftype av_opmode
;
285 struct ath_buf
*av_bcbuf
;
286 struct ath_tx_control av_btxctl
;
287 u8 bssid
[ETH_ALEN
]; /* current BSSID from config_interface */
290 /*******************/
291 /* Beacon Handling */
292 /*******************/
295 * Regardless of the number of beacons we stagger, (i.e. regardless of the
296 * number of BSSIDs) if a given beacon does not go out even after waiting this
297 * number of beacon intervals, the game's up.
299 #define BSTUCK_THRESH (9 * ATH_BCBUF)
301 #define ATH_DEFAULT_BINTVAL 100 /* TU */
302 #define ATH_DEFAULT_BMISS_LIMIT 10
303 #define IEEE80211_MS_TO_TU(x) (((x) * 1000) / 1024)
305 struct ath_beacon_config
{
315 OK
, /* no change needed */
316 UPDATE
, /* update pending */
317 COMMIT
/* beacon sent, commit change */
318 } updateslot
; /* slot time update fsm */
324 struct ieee80211_vif
*bslot
[ATH_BCBUF
];
325 struct ath_wiphy
*bslot_aphy
[ATH_BCBUF
];
328 struct ath9k_tx_queue_info beacon_qi
;
329 struct ath_descdma bdma
;
330 struct ath_txq
*cabq
;
331 struct list_head bbuf
;
334 void ath_beacon_tasklet(unsigned long data
);
335 void ath_beacon_config(struct ath_softc
*sc
, struct ieee80211_vif
*vif
);
336 int ath_beacon_alloc(struct ath_wiphy
*aphy
, struct ieee80211_vif
*vif
);
337 void ath_beacon_return(struct ath_softc
*sc
, struct ath_vif
*avp
);
338 int ath_beaconq_config(struct ath_softc
*sc
);
344 #define ATH_STA_SHORT_CALINTERVAL 1000 /* 1 second */
345 #define ATH_AP_SHORT_CALINTERVAL 100 /* 100 ms */
346 #define ATH_ANI_POLLINTERVAL 100 /* 100 ms */
347 #define ATH_LONG_CALINTERVAL 30000 /* 30 seconds */
348 #define ATH_RESTART_CALINTERVAL 1200000 /* 20 minutes */
350 void ath_ani_calibrate(unsigned long data
);
356 /* Defines the BT AR_BT_COEX_WGHT used */
357 enum ath_stomp_type
{
359 ATH_BTCOEX_STOMP_ALL
,
360 ATH_BTCOEX_STOMP_LOW
,
361 ATH_BTCOEX_STOMP_NONE
365 bool hw_timer_enabled
;
366 spinlock_t btcoex_lock
;
367 struct timer_list period_timer
; /* Timer for BT period */
369 unsigned long bt_priority_time
;
370 int bt_stomp_type
; /* Types of BT stomping */
371 u32 btcoex_no_stomp
; /* in usec */
372 u32 btcoex_period
; /* in usec */
373 u32 btscan_no_stomp
; /* in usec */
374 struct ath_gen_timer
*no_stomp_timer
; /* Timer for no BT stomping */
377 int ath_init_btcoex_timer(struct ath_softc
*sc
);
378 void ath9k_btcoex_timer_resume(struct ath_softc
*sc
);
379 void ath9k_btcoex_timer_pause(struct ath_softc
*sc
);
381 /********************/
383 /********************/
385 #define ATH_LED_PIN_DEF 1
386 #define ATH_LED_PIN_9287 8
387 #define ATH_LED_ON_DURATION_IDLE 350 /* in msecs */
388 #define ATH_LED_OFF_DURATION_IDLE 250 /* in msecs */
398 struct ath_softc
*sc
;
399 struct led_classdev led_cdev
;
400 enum ath_led_type led_type
;
405 void ath_init_leds(struct ath_softc
*sc
);
406 void ath_deinit_leds(struct ath_softc
*sc
);
408 /********************/
409 /* Main driver core */
410 /********************/
413 * Default cache line size, in bytes.
414 * Used when PCI device not fully initialized by bootrom/BIOS
416 #define DEFAULT_CACHELINE 32
417 #define ATH_REGCLASSIDS_MAX 10
418 #define ATH_CABQ_READY_TIME 80 /* % of beacon interval */
419 #define ATH_MAX_SW_RETRIES 10
420 #define ATH_CHAN_MAX 255
421 #define IEEE80211_WEP_NKID 4 /* number of key ids */
423 #define ATH_TXPOWER_MAX 100 /* .5 dBm units */
424 #define ATH_RATE_DUMMY_MARKER 0
426 #define SC_OP_INVALID BIT(0)
427 #define SC_OP_BEACONS BIT(1)
428 #define SC_OP_RXAGGR BIT(2)
429 #define SC_OP_TXAGGR BIT(3)
430 #define SC_OP_FULL_RESET BIT(4)
431 #define SC_OP_PREAMBLE_SHORT BIT(5)
432 #define SC_OP_PROTECT_ENABLE BIT(6)
433 #define SC_OP_RXFLUSH BIT(7)
434 #define SC_OP_LED_ASSOCIATED BIT(8)
435 #define SC_OP_LED_ON BIT(9)
436 #define SC_OP_SCANNING BIT(10)
437 #define SC_OP_TSF_RESET BIT(11)
438 #define SC_OP_BT_PRIORITY_DETECTED BIT(12)
439 #define SC_OP_BT_SCAN BIT(13)
441 /* Powersave flags */
442 #define PS_WAIT_FOR_BEACON BIT(0)
443 #define PS_WAIT_FOR_CAB BIT(1)
444 #define PS_WAIT_FOR_PSPOLL_DATA BIT(2)
445 #define PS_WAIT_FOR_TX_ACK BIT(3)
446 #define PS_BEACON_SYNC BIT(4)
447 #define PS_NULLFUNC_COMPLETED BIT(5)
448 #define PS_ENABLED BIT(6)
451 struct ath_rate_table
;
454 struct ieee80211_hw
*hw
;
457 spinlock_t wiphy_lock
; /* spinlock to protect ath_wiphy data */
458 struct ath_wiphy
*pri_wiphy
;
459 struct ath_wiphy
**sec_wiphy
; /* secondary wiphys (virtual radios); may
460 * have NULL entries */
461 int num_sec_wiphy
; /* number of sec_wiphy pointers in the array */
464 struct ath_wiphy
*next_wiphy
;
465 struct work_struct chan_work
;
466 int wiphy_select_failures
;
467 unsigned long wiphy_select_first_fail
;
468 struct delayed_work wiphy_work
;
469 unsigned long wiphy_scheduler_int
;
470 int wiphy_scheduler_index
;
472 struct tasklet_struct intr_tq
;
473 struct tasklet_struct bcon_tasklet
;
474 struct ath_hw
*sc_ah
;
477 spinlock_t sc_resetlock
;
478 spinlock_t sc_serial_rw
;
479 spinlock_t sc_pm_lock
;
483 u32 sc_flags
; /* SC_OP_* */
484 u16 ps_flags
; /* PS_* */
490 unsigned long ps_usecount
;
492 struct ath_config config
;
495 struct ath_beacon beacon
;
496 const struct ath_rate_table
*cur_rate_table
;
497 enum wireless_mode cur_rate_mode
;
498 struct ieee80211_supported_band sbands
[IEEE80211_NUM_BANDS
];
500 struct ath_led radio_led
;
501 struct ath_led assoc_led
;
502 struct ath_led tx_led
;
503 struct ath_led rx_led
;
504 struct delayed_work ath_led_blink_work
;
506 int led_off_duration
;
512 #ifdef CONFIG_ATH9K_DEBUGFS
513 struct ath9k_debug debug
;
515 struct ath_beacon_config cur_beacon_conf
;
516 struct delayed_work tx_complete_work
;
517 struct ath_btcoex btcoex
;
521 struct ath_softc
*sc
; /* shared for all virtual wiphys */
522 struct ieee80211_hw
*hw
;
523 enum ath_wiphy_state
{
535 void ath9k_tasklet(unsigned long data
);
536 int ath_reset(struct ath_softc
*sc
, bool retry_tx
);
537 int ath_get_hal_qnum(u16 queue
, struct ath_softc
*sc
);
538 int ath_get_mac80211_qnum(u32 queue
, struct ath_softc
*sc
);
539 int ath_cabq_update(struct ath_softc
*);
541 static inline void ath_read_cachesize(struct ath_common
*common
, int *csz
)
543 common
->bus_ops
->read_cachesize(common
, csz
);
546 extern struct ieee80211_ops ath9k_ops
;
547 extern int modparam_nohwcrypt
;
549 irqreturn_t
ath_isr(int irq
, void *dev
);
550 int ath9k_init_device(u16 devid
, struct ath_softc
*sc
, u16 subsysid
,
551 const struct ath_bus_ops
*bus_ops
);
552 void ath9k_deinit_device(struct ath_softc
*sc
);
553 const char *ath_mac_bb_name(u32 mac_bb_version
);
554 const char *ath_rf_name(u16 rf_version
);
555 void ath9k_set_hw_capab(struct ath_softc
*sc
, struct ieee80211_hw
*hw
);
556 void ath9k_update_ichannel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
557 struct ath9k_channel
*ichan
);
558 void ath_update_chainmask(struct ath_softc
*sc
, int is_ht
);
559 int ath_set_channel(struct ath_softc
*sc
, struct ieee80211_hw
*hw
,
560 struct ath9k_channel
*hchan
);
562 void ath_radio_enable(struct ath_softc
*sc
, struct ieee80211_hw
*hw
);
563 void ath_radio_disable(struct ath_softc
*sc
, struct ieee80211_hw
*hw
);
564 bool ath9k_setpower(struct ath_softc
*sc
, enum ath9k_power_mode mode
);
567 int ath_pci_init(void);
568 void ath_pci_exit(void);
570 static inline int ath_pci_init(void) { return 0; };
571 static inline void ath_pci_exit(void) {};
574 #ifdef CONFIG_ATHEROS_AR71XX
575 int ath_ahb_init(void);
576 void ath_ahb_exit(void);
578 static inline int ath_ahb_init(void) { return 0; };
579 static inline void ath_ahb_exit(void) {};
582 void ath9k_ps_wakeup(struct ath_softc
*sc
);
583 void ath9k_ps_restore(struct ath_softc
*sc
);
585 void ath9k_set_bssid_mask(struct ieee80211_hw
*hw
);
586 int ath9k_wiphy_add(struct ath_softc
*sc
);
587 int ath9k_wiphy_del(struct ath_wiphy
*aphy
);
588 void ath9k_tx_status(struct ieee80211_hw
*hw
, struct sk_buff
*skb
);
589 int ath9k_wiphy_pause(struct ath_wiphy
*aphy
);
590 int ath9k_wiphy_unpause(struct ath_wiphy
*aphy
);
591 int ath9k_wiphy_select(struct ath_wiphy
*aphy
);
592 void ath9k_wiphy_set_scheduler(struct ath_softc
*sc
, unsigned int msec_int
);
593 void ath9k_wiphy_chan_work(struct work_struct
*work
);
594 bool ath9k_wiphy_started(struct ath_softc
*sc
);
595 void ath9k_wiphy_pause_all_forced(struct ath_softc
*sc
,
596 struct ath_wiphy
*selected
);
597 bool ath9k_wiphy_scanning(struct ath_softc
*sc
);
598 void ath9k_wiphy_work(struct work_struct
*work
);
599 bool ath9k_all_wiphys_idle(struct ath_softc
*sc
);
600 void ath9k_set_wiphy_idle(struct ath_wiphy
*aphy
, bool idle
);
602 void ath_mac80211_stop_queue(struct ath_softc
*sc
, u16 skb_queue
);
603 void ath_mac80211_start_queue(struct ath_softc
*sc
, u16 skb_queue
);
605 int ath_tx_get_qnum(struct ath_softc
*sc
, int qtype
, int haltype
);
607 void ath_start_rfkill_poll(struct ath_softc
*sc
);
608 extern void ath9k_rfkill_poll_state(struct ieee80211_hw
*hw
);