/* * Copyright (c) 2008-2009 Atheros Communications Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef ATH9K_H #define ATH9K_H #include #include #include #include "debug.h" #include "common.h" /* * Header for the ath9k.ko driver core *only* -- hw code nor any other driver * should rely on this file or its contents. */ struct ath_node; /* Macro to expand scalars to 64-bit objects */ #define ito64(x) (sizeof(x) == 1) ? \ (((unsigned long long int)(x)) & (0xff)) : \ (sizeof(x) == 2) ? \ (((unsigned long long int)(x)) & 0xffff) : \ ((sizeof(x) == 4) ? \ (((unsigned long long int)(x)) & 0xffffffff) : \ (unsigned long long int)(x)) /* increment with wrap-around */ #define INCR(_l, _sz) do { \ (_l)++; \ (_l) &= ((_sz) - 1); \ } while (0) /* decrement with wrap-around */ #define DECR(_l, _sz) do { \ (_l)--; \ (_l) &= ((_sz) - 1); \ } while (0) #define A_MAX(a, b) ((a) > (b) ? (a) : (b)) #define TSF_TO_TU(_h,_l) \ ((((u32)(_h)) << 22) | (((u32)(_l)) >> 10)) #define ATH_TXQ_SETUP(sc, i) ((sc)->tx.txqsetup & (1<bf_stale = false; \ (_bf)->bf_lastbf = NULL; \ (_bf)->bf_next = NULL; \ memset(&((_bf)->bf_state), 0, \ sizeof(struct ath_buf_state)); \ } while (0) #define ATH_RXBUF_RESET(_bf) do { \ (_bf)->bf_stale = false; \ } while (0) /** * enum buffer_type - Buffer type flags * * @BUF_HT: Send this buffer using HT capabilities * @BUF_AMPDU: This buffer is an ampdu, as part of an aggregate (during TX) * @BUF_AGGR: Indicates whether the buffer can be aggregated * (used in aggregation scheduling) * @BUF_RETRY: Indicates whether the buffer is retried * @BUF_XRETRY: To denote excessive retries of the buffer */ enum buffer_type { BUF_HT = BIT(1), BUF_AMPDU = BIT(2), BUF_AGGR = BIT(3), BUF_RETRY = BIT(4), BUF_XRETRY = BIT(5), }; #define bf_nframes bf_state.bfs_nframes #define bf_al bf_state.bfs_al #define bf_frmlen bf_state.bfs_frmlen #define bf_retries bf_state.bfs_retries #define bf_seqno bf_state.bfs_seqno #define bf_tidno bf_state.bfs_tidno #define bf_keyix bf_state.bfs_keyix #define bf_keytype bf_state.bfs_keytype #define bf_isht(bf) (bf->bf_state.bf_type & BUF_HT) #define bf_isampdu(bf) (bf->bf_state.bf_type & BUF_AMPDU) #define bf_isaggr(bf) (bf->bf_state.bf_type & BUF_AGGR) #define bf_isretried(bf) (bf->bf_state.bf_type & BUF_RETRY) #define bf_isxretried(bf) (bf->bf_state.bf_type & BUF_XRETRY) struct ath_descdma { struct ath_desc *dd_desc; dma_addr_t dd_desc_paddr; u32 dd_desc_len; struct ath_buf *dd_bufptr; }; int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd, struct list_head *head, const char *name, int nbuf, int ndesc); void ath_descdma_cleanup(struct ath_softc *sc, struct ath_descdma *dd, struct list_head *head); /***********/ /* RX / TX */ /***********/ #define ATH_MAX_ANTENNA 3 #define ATH_RXBUF 512 #define ATH_TXBUF 512 #define ATH_TXMAXTRY 13 #define ATH_MGT_TXMAXTRY 4 #define TID_TO_WME_AC(_tid) \ ((((_tid) == 0) || ((_tid) == 3)) ? WME_AC_BE : \ (((_tid) == 1) || ((_tid) == 2)) ? WME_AC_BK : \ (((_tid) == 4) || ((_tid) == 5)) ? WME_AC_VI : \ WME_AC_VO) #define ADDBA_EXCHANGE_ATTEMPTS 10 #define ATH_AGGR_DELIM_SZ 4 #define ATH_AGGR_MINPLEN 256 /* in bytes, minimum packet length */ /* number of delimiters for encryption padding */ #define ATH_AGGR_ENCRYPTDELIM 10 /* minimum h/w qdepth to be sustained to maximize aggregation */ #define ATH_AGGR_MIN_QDEPTH 2 #define ATH_AMPDU_SUBFRAME_DEFAULT 32 #define IEEE80211_SEQ_SEQ_SHIFT 4 #define IEEE80211_SEQ_MAX 4096 #define IEEE80211_WEP_IVLEN 3 #define IEEE80211_WEP_KIDLEN 1 #define IEEE80211_WEP_CRCLEN 4 #define IEEE80211_MAX_MPDU_LEN (3840 + FCS_LEN + \ (IEEE80211_WEP_IVLEN + \ IEEE80211_WEP_KIDLEN + \ IEEE80211_WEP_CRCLEN)) /* return whether a bit at index _n in bitmap _bm is set * _sz is the size of the bitmap */ #define ATH_BA_ISSET(_bm, _n) (((_n) < (WME_BA_BMP_SIZE)) && \ ((_bm)[(_n) >> 5] & (1 << ((_n) & 31)))) /* return block-ack bitmap index given sequence and starting sequence */ #define ATH_BA_INDEX(_st, _seq) (((_seq) - (_st)) & (IEEE80211_SEQ_MAX - 1)) /* returns delimiter padding required given the packet length */ #define ATH_AGGR_GET_NDELIM(_len) \ (((((_len) + ATH_AGGR_DELIM_SZ) < ATH_AGGR_MINPLEN) ? \ (ATH_AGGR_MINPLEN - (_len) - ATH_AGGR_DELIM_SZ) : 0) >> 2) #define BAW_WITHIN(_start, _bawsz, _seqno) \ ((((_seqno) - (_start)) & 4095) < (_bawsz)) #define ATH_AN_2_TID(_an, _tidno) (&(_an)->tid[(_tidno)]) #define ATH_TX_COMPLETE_POLL_INT 1000 enum ATH_AGGR_STATUS { ATH_AGGR_DONE, ATH_AGGR_BAW_CLOSED, ATH_AGGR_LIMITED, }; struct ath_txq { u32 axq_qnum; u32 *axq_link; struct list_head axq_q; spinlock_t axq_lock; u32 axq_depth; bool stopped; bool axq_tx_inprogress; struct list_head axq_acq; }; #define AGGR_CLEANUP BIT(1) #define AGGR_ADDBA_COMPLETE BIT(2) #define AGGR_ADDBA_PROGRESS BIT(3) struct ath_tx_control { struct ath_txq *txq; int if_id; enum ath9k_internal_frame_type frame_type; }; #define ATH_TX_ERROR 0x01 #define ATH_TX_XRETRY 0x02 #define ATH_TX_BAR 0x04 struct ath_tx { u16 seq_no; u32 txqsetup; int hwq_map[ATH9K_WME_AC_VO+1]; spinlock_t txbuflock; struct list_head txbuf; struct ath_txq txq[ATH9K_NUM_TX_QUEUES]; struct ath_descdma txdma; }; struct ath_rx_edma { struct sk_buff_head rx_fifo; struct sk_buff_head rx_buffers; u32 rx_fifo_hwsize; }; struct ath_rx { u8 defant; u8 rxotherant; u32 *rxlink; unsigned int rxfilter; spinlock_t rxflushlock; spinlock_t rxbuflock; struct list_head rxbuf; struct ath_descdma rxdma; struct ath_buf *rx_bufptr; struct ath_rx_edma rx_edma[ATH9K_RX_QUEUE_MAX]; }; int ath_startrecv(struct ath_softc *sc); bool ath_stoprecv(struct ath_softc *sc); void ath_flushrecv(struct ath_softc *sc); u32 ath_calcrxfilter(struct ath_softc *sc); int ath_rx_init(struct ath_softc *sc, int nbufs); void ath_rx_cleanup(struct ath_softc *sc); int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp); struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype); void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq); int ath_tx_setup(struct ath_softc *sc, int haltype); void ath_drain_all_txq(struct ath_softc *sc, bool retry_tx); void ath_draintxq(struct ath_softc *sc, struct ath_txq *txq, bool retry_tx); void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an); void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an); void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq); int ath_tx_init(struct ath_softc *sc, int nbufs); void ath_tx_cleanup(struct ath_softc *sc); struct ath_txq *ath_test_get_txq(struct ath_softc *sc, struct sk_buff *skb); int ath_txq_update(struct ath_softc *sc, int qnum, struct ath9k_tx_queue_info *q); int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb, struct ath_tx_control *txctl); void ath_tx_tasklet(struct ath_softc *sc); void ath_tx_cabq(struct ieee80211_hw *hw, struct sk_buff *skb); bool ath_tx_aggr_check(struct ath_softc *sc, struct ath_node *an, u8 tidno); void ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid, u16 *ssn); void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid); void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid); void ath9k_enable_ps(struct ath_softc *sc); /********/ /* VIFs */ /********/ struct ath_vif { int av_bslot; __le64 tsf_adjust; /* TSF adjustment for staggered beacons */ enum nl80211_iftype av_opmode; struct ath_buf *av_bcbuf; struct ath_tx_control av_btxctl; u8 bssid[ETH_ALEN]; /* current BSSID from config_interface */ }; /*******************/ /* Beacon Handling */ /*******************/ /* * Regardless of the number of beacons we stagger, (i.e. regardless of the * number of BSSIDs) if a given beacon does not go out even after waiting this * number of beacon intervals, the game's up. */ #define BSTUCK_THRESH (9 * ATH_BCBUF) #define ATH_BCBUF 4 #define ATH_DEFAULT_BINTVAL 100 /* TU */ #define ATH_DEFAULT_BMISS_LIMIT 10 #define IEEE80211_MS_TO_TU(x) (((x) * 1000) / 1024) struct ath_beacon_config { u16 beacon_interval; u16 listen_interval; u16 dtim_period; u16 bmiss_timeout; u8 dtim_count; }; struct ath_beacon { enum { OK, /* no change needed */ UPDATE, /* update pending */ COMMIT /* beacon sent, commit change */ } updateslot; /* slot time update fsm */ u32 beaconq; u32 bmisscnt; u32 ast_be_xmit; u64 bc_tstamp; struct ieee80211_vif *bslot[ATH_BCBUF]; struct ath_wiphy *bslot_aphy[ATH_BCBUF]; int slottime; int slotupdate; struct ath9k_tx_queue_info beacon_qi; struct ath_descdma bdma; struct ath_txq *cabq; struct list_head bbuf; }; void ath_beacon_tasklet(unsigned long data); void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif); int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif); void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp); int ath_beaconq_config(struct ath_softc *sc); /*******/ /* ANI */ /*******/ #define ATH_STA_SHORT_CALINTERVAL 1000 /* 1 second */ #define ATH_AP_SHORT_CALINTERVAL 100 /* 100 ms */ #define ATH_ANI_POLLINTERVAL 100 /* 100 ms */ #define ATH_LONG_CALINTERVAL 30000 /* 30 seconds */ #define ATH_RESTART_CALINTERVAL 1200000 /* 20 minutes */ void ath_ani_calibrate(unsigned long data); /**********/ /* BTCOEX */ /**********/ /* Defines the BT AR_BT_COEX_WGHT used */ enum ath_stomp_type { ATH_BTCOEX_NO_STOMP, ATH_BTCOEX_STOMP_ALL, ATH_BTCOEX_STOMP_LOW, ATH_BTCOEX_STOMP_NONE }; struct ath_btcoex { bool hw_timer_enabled; spinlock_t btcoex_lock; struct timer_list period_timer; /* Timer for BT period */ u32 bt_priority_cnt; unsigned long bt_priority_time; int bt_stomp_type; /* Types of BT stomping */ u32 btcoex_no_stomp; /* in usec */ u32 btcoex_period; /* in usec */ u32 btscan_no_stomp; /* in usec */ struct ath_gen_timer *no_stomp_timer; /* Timer for no BT stomping */ }; int ath_init_btcoex_timer(struct ath_softc *sc); void ath9k_btcoex_timer_resume(struct ath_softc *sc); void ath9k_btcoex_timer_pause(struct ath_softc *sc); /********************/ /* LED Control */ /********************/ #define ATH_LED_PIN_DEF 1 #define ATH_LED_PIN_9287 8 #define ATH_LED_ON_DURATION_IDLE 350 /* in msecs */ #define ATH_LED_OFF_DURATION_IDLE 250 /* in msecs */ enum ath_led_type { ATH_LED_RADIO, ATH_LED_ASSOC, ATH_LED_TX, ATH_LED_RX }; struct ath_led { struct ath_softc *sc; struct led_classdev led_cdev; enum ath_led_type led_type; char name[32]; bool registered; }; void ath_init_leds(struct ath_softc *sc); void ath_deinit_leds(struct ath_softc *sc); /********************/ /* Main driver core */ /********************/ /* * Default cache line size, in bytes. * Used when PCI device not fully initialized by bootrom/BIOS */ #define DEFAULT_CACHELINE 32 #define ATH_REGCLASSIDS_MAX 10 #define ATH_CABQ_READY_TIME 80 /* % of beacon interval */ #define ATH_MAX_SW_RETRIES 10 #define ATH_CHAN_MAX 255 #define IEEE80211_WEP_NKID 4 /* number of key ids */ #define ATH_TXPOWER_MAX 100 /* .5 dBm units */ #define ATH_RATE_DUMMY_MARKER 0 #define SC_OP_INVALID BIT(0) #define SC_OP_BEACONS BIT(1) #define SC_OP_RXAGGR BIT(2) #define SC_OP_TXAGGR BIT(3) #define SC_OP_FULL_RESET BIT(4) #define SC_OP_PREAMBLE_SHORT BIT(5) #define SC_OP_PROTECT_ENABLE BIT(6) #define SC_OP_RXFLUSH BIT(7) #define SC_OP_LED_ASSOCIATED BIT(8) #define SC_OP_LED_ON BIT(9) #define SC_OP_SCANNING BIT(10) #define SC_OP_TSF_RESET BIT(11) #define SC_OP_BT_PRIORITY_DETECTED BIT(12) #define SC_OP_BT_SCAN BIT(13) /* Powersave flags */ #define PS_WAIT_FOR_BEACON BIT(0) #define PS_WAIT_FOR_CAB BIT(1) #define PS_WAIT_FOR_PSPOLL_DATA BIT(2) #define PS_WAIT_FOR_TX_ACK BIT(3) #define PS_BEACON_SYNC BIT(4) #define PS_NULLFUNC_COMPLETED BIT(5) #define PS_ENABLED BIT(6) struct ath_wiphy; struct ath_rate_table; struct ath_softc { struct ieee80211_hw *hw; struct device *dev; spinlock_t wiphy_lock; /* spinlock to protect ath_wiphy data */ struct ath_wiphy *pri_wiphy; struct ath_wiphy **sec_wiphy; /* secondary wiphys (virtual radios); may * have NULL entries */ int num_sec_wiphy; /* number of sec_wiphy pointers in the array */ int chan_idx; int chan_is_ht; struct ath_wiphy *next_wiphy; struct work_struct chan_work; int wiphy_select_failures; unsigned long wiphy_select_first_fail; struct delayed_work wiphy_work; unsigned long wiphy_scheduler_int; int wiphy_scheduler_index; struct tasklet_struct intr_tq; struct tasklet_struct bcon_tasklet; struct ath_hw *sc_ah; void __iomem *mem; int irq; spinlock_t sc_resetlock; spinlock_t sc_serial_rw; spinlock_t sc_pm_lock; struct mutex mutex; u32 intrstatus; u32 sc_flags; /* SC_OP_* */ u16 ps_flags; /* PS_* */ u16 curtxpow; u8 nbcnvifs; u16 nvifs; bool ps_enabled; bool ps_idle; unsigned long ps_usecount; struct ath_config config; struct ath_rx rx; struct ath_tx tx; struct ath_beacon beacon; const struct ath_rate_table *cur_rate_table; enum wireless_mode cur_rate_mode; struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS]; struct ath_led radio_led; struct ath_led assoc_led; struct ath_led tx_led; struct ath_led rx_led; struct delayed_work ath_led_blink_work; int led_on_duration; int led_off_duration; int led_on_cnt; int led_off_cnt; int beacon_interval; #ifdef CONFIG_ATH9K_DEBUGFS struct ath9k_debug debug; #endif struct ath_beacon_config cur_beacon_conf; struct delayed_work tx_complete_work; struct ath_btcoex btcoex; }; struct ath_wiphy { struct ath_softc *sc; /* shared for all virtual wiphys */ struct ieee80211_hw *hw; enum ath_wiphy_state { ATH_WIPHY_INACTIVE, ATH_WIPHY_ACTIVE, ATH_WIPHY_PAUSING, ATH_WIPHY_PAUSED, ATH_WIPHY_SCAN, } state; bool idle; int chan_idx; int chan_is_ht; }; void ath9k_tasklet(unsigned long data); int ath_reset(struct ath_softc *sc, bool retry_tx); int ath_get_hal_qnum(u16 queue, struct ath_softc *sc); int ath_get_mac80211_qnum(u32 queue, struct ath_softc *sc); int ath_cabq_update(struct ath_softc *); static inline void ath_read_cachesize(struct ath_common *common, int *csz) { common->bus_ops->read_cachesize(common, csz); } extern struct ieee80211_ops ath9k_ops; extern int modparam_nohwcrypt; irqreturn_t ath_isr(int irq, void *dev); int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid, const struct ath_bus_ops *bus_ops); void ath9k_deinit_device(struct ath_softc *sc); const char *ath_mac_bb_name(u32 mac_bb_version); const char *ath_rf_name(u16 rf_version); void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw); void ath9k_update_ichannel(struct ath_softc *sc, struct ieee80211_hw *hw, struct ath9k_channel *ichan); void ath_update_chainmask(struct ath_softc *sc, int is_ht); int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw, struct ath9k_channel *hchan); void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw); void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw); bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode); #ifdef CONFIG_PCI int ath_pci_init(void); void ath_pci_exit(void); #else static inline int ath_pci_init(void) { return 0; }; static inline void ath_pci_exit(void) {}; #endif #ifdef CONFIG_ATHEROS_AR71XX int ath_ahb_init(void); void ath_ahb_exit(void); #else static inline int ath_ahb_init(void) { return 0; }; static inline void ath_ahb_exit(void) {}; #endif void ath9k_ps_wakeup(struct ath_softc *sc); void ath9k_ps_restore(struct ath_softc *sc); void ath9k_set_bssid_mask(struct ieee80211_hw *hw); int ath9k_wiphy_add(struct ath_softc *sc); int ath9k_wiphy_del(struct ath_wiphy *aphy); void ath9k_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb); int ath9k_wiphy_pause(struct ath_wiphy *aphy); int ath9k_wiphy_unpause(struct ath_wiphy *aphy); int ath9k_wiphy_select(struct ath_wiphy *aphy); void ath9k_wiphy_set_scheduler(struct ath_softc *sc, unsigned int msec_int); void ath9k_wiphy_chan_work(struct work_struct *work); bool ath9k_wiphy_started(struct ath_softc *sc); void ath9k_wiphy_pause_all_forced(struct ath_softc *sc, struct ath_wiphy *selected); bool ath9k_wiphy_scanning(struct ath_softc *sc); void ath9k_wiphy_work(struct work_struct *work); bool ath9k_all_wiphys_idle(struct ath_softc *sc); void ath9k_set_wiphy_idle(struct ath_wiphy *aphy, bool idle); void ath_mac80211_stop_queue(struct ath_softc *sc, u16 skb_queue); void ath_mac80211_start_queue(struct ath_softc *sc, u16 skb_queue); int ath_tx_get_qnum(struct ath_softc *sc, int qtype, int haltype); void ath_start_rfkill_poll(struct ath_softc *sc); extern void ath9k_rfkill_poll_state(struct ieee80211_hw *hw); #endif /* ATH9K_H */