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* Copyright (c) 2010-2011 Atheros Communications Inc.
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/firmware.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include <linux/leds.h>
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#include <linux/slab.h>
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#include <net/mac80211.h>
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#define ATH_STA_SHORT_CALINTERVAL 1000 /* 1 second */
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#define ATH_AP_SHORT_CALINTERVAL 100 /* 100 ms */
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#define ATH_ANI_POLLINTERVAL 100 /* 100 ms */
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#define ATH_LONG_CALINTERVAL 30000 /* 30 seconds */
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#define ATH_RESTART_CALINTERVAL 1200000 /* 20 minutes */
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#define ATH_DEFAULT_BMISS_LIMIT 10
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#define IEEE80211_MS_TO_TU(x) (((x) * 1000) / 1024)
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#define TSF_TO_TU(_h, _l) \
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((((u32)(_h)) << 22) | (((u32)(_l)) >> 10))
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extern struct ieee80211_ops ath9k_htc_ops;
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extern int htc_modparam_nohwcrypt;
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#define ATH9K_HTC_AMPDU 1
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#define ATH9K_HTC_NORMAL 2
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#define ATH9K_HTC_BEACON 3
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#define ATH9K_HTC_MGMT 4
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#define ATH9K_HTC_TX_CTSONLY 0x1
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#define ATH9K_HTC_TX_RTSCTS 0x2
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__be32 flags; /* ATH9K_HTC_TX_* */
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struct tx_beacon_header {
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#define MAX_TX_AMPDU_SUBFRAMES_9271 17
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#define MAX_TX_AMPDU_SUBFRAMES_7010 22
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struct ath9k_htc_cap_target {
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struct ath9k_htc_target_vif {
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struct ath9k_htc_target_sta {
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u8 macaddr[ETH_ALEN];
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struct ath9k_htc_target_aggr {
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#define ATH_HTC_RATE_MAX 30
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#define WLAN_RC_DS_FLAG 0x01
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#define WLAN_RC_40_FLAG 0x02
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#define WLAN_RC_SGI_FLAG 0x04
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#define WLAN_RC_HT_FLAG 0x08
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struct ath9k_htc_rateset {
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u8 rs_rates[ATH_HTC_RATE_MAX];
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struct ath9k_htc_rate {
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struct ath9k_htc_rateset legacy_rates;
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struct ath9k_htc_rateset ht_rates;
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struct ath9k_htc_target_rate {
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struct ath9k_htc_rate rates;
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struct ath9k_htc_target_rate_mask {
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struct ath9k_htc_target_int_stats {
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struct ath9k_htc_target_tx_stats {
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struct ath9k_htc_target_rx_stats {
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#define ATH9K_HTC_MAX_VIF 2
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#define ATH9K_HTC_MAX_BCN_VIF 2
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#define INC_VIF(_priv, _type) do { \
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case NL80211_IFTYPE_STATION: \
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_priv->num_sta_vif++; \
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case NL80211_IFTYPE_ADHOC: \
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_priv->num_ibss_vif++; \
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case NL80211_IFTYPE_AP: \
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_priv->num_ap_vif++; \
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#define DEC_VIF(_priv, _type) do { \
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case NL80211_IFTYPE_STATION: \
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_priv->num_sta_vif--; \
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case NL80211_IFTYPE_ADHOC: \
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_priv->num_ibss_vif--; \
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case NL80211_IFTYPE_AP: \
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_priv->num_ap_vif--; \
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struct ath9k_htc_vif {
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bool beacon_configured;
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struct ath9k_vif_iter_data {
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const u8 *hw_macaddr;
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#define ATH9K_HTC_MAX_STA 8
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#define ATH9K_HTC_MAX_TID 8
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enum tid_aggr_state {
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struct ath9k_htc_sta {
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enum tid_aggr_state tid_state[ATH9K_HTC_MAX_TID];
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#define ATH9K_HTC_RXBUF 256
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#define HTC_RX_FRAME_HEADER_SIZE 40
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struct ath9k_htc_rxbuf {
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struct ath_htc_rx_status rxstatus;
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struct list_head list;
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struct ath9k_htc_rx {
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int last_rssi; /* FIXME: per-STA */
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struct list_head rxbuf;
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spinlock_t rxbuflock;
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#define ATH9K_HTC_TX_CLEANUP_INTERVAL 50 /* ms */
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#define ATH9K_HTC_TX_TIMEOUT_INTERVAL 3000 /* ms */
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#define ATH9K_HTC_TX_RESERVE 10
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#define ATH9K_HTC_TX_TIMEOUT_COUNT 40
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#define ATH9K_HTC_TX_THRESHOLD (MAX_TX_BUF_NUM - ATH9K_HTC_TX_RESERVE)
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#define ATH9K_HTC_OP_TX_QUEUES_STOP BIT(0)
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#define ATH9K_HTC_OP_TX_DRAIN BIT(1)
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struct ath9k_htc_tx {
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struct sk_buff_head mgmt_ep_queue;
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struct sk_buff_head cab_ep_queue;
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struct sk_buff_head data_be_queue;
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struct sk_buff_head data_bk_queue;
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struct sk_buff_head data_vi_queue;
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struct sk_buff_head data_vo_queue;
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struct sk_buff_head tx_failed;
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DECLARE_BITMAP(tx_slot, MAX_TX_BUF_NUM);
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struct timer_list cleanup_timer;
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struct ath9k_htc_tx_ctl {
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u8 type; /* ATH9K_HTC_* */
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unsigned long timestamp;
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static inline struct ath9k_htc_tx_ctl *HTC_SKB_CB(struct sk_buff *skb)
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struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
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BUILD_BUG_ON(sizeof(struct ath9k_htc_tx_ctl) >
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IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
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return (struct ath9k_htc_tx_ctl *) &tx_info->driver_data;
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#ifdef CONFIG_ATH9K_HTC_DEBUGFS
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#define TX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.tx_stats.c++)
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#define RX_STAT_INC(c) (hif_dev->htc_handle->drv_priv->debug.rx_stats.c++)
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#define CAB_STAT_INC priv->debug.tx_stats.cab_queued++
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#define TX_QSTAT_INC(q) (priv->debug.tx_stats.queue_stats[q]++)
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void ath9k_htc_err_stat_rx(struct ath9k_htc_priv *priv,
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struct ath_htc_rx_status *rxs);
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struct ath_tx_stats {
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u32 queue_stats[WME_NUM_AC];
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struct ath_rx_stats {
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u32 err_decrypt_busy;
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u32 err_phy_stats[ATH9K_PHYERR_MAX];
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struct dentry *debugfs_phy;
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struct ath_tx_stats tx_stats;
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struct ath_rx_stats rx_stats;
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#define TX_STAT_INC(c) do { } while (0)
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#define RX_STAT_INC(c) do { } while (0)
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#define CAB_STAT_INC do { } while (0)
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#define TX_QSTAT_INC(c) do { } while (0)
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static inline void ath9k_htc_err_stat_rx(struct ath9k_htc_priv *priv,
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struct ath_htc_rx_status *rxs)
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#endif /* CONFIG_ATH9K_HTC_DEBUGFS */
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#define ATH_LED_PIN_DEF 1
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#define ATH_LED_PIN_9287 10
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#define ATH_LED_PIN_9271 15
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#define ATH_LED_PIN_7010 12
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#define BSTUCK_THRESHOLD 10
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* Adjust these when the max. no of beaconing interfaces is
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#define DEFAULT_SWBA_RESPONSE 40 /* in TUs */
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#define MIN_SWBA_RESPONSE 10 /* in TUs */
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struct htc_beacon_config {
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struct ieee80211_vif *bslot[ATH9K_HTC_MAX_BCN_VIF];
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unsigned long bt_priority_time;
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int bt_stomp_type; /* Types of BT stomping */
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void ath_htc_init_btcoex_work(struct ath9k_htc_priv *priv);
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void ath_htc_resume_btcoex_work(struct ath9k_htc_priv *priv);
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void ath_htc_cancel_btcoex_work(struct ath9k_htc_priv *priv);
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#define OP_INVALID BIT(0)
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#define OP_SCANNING BIT(1)
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#define OP_ENABLE_BEACON BIT(2)
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#define OP_BT_PRIORITY_DETECTED BIT(3)
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#define OP_BT_SCAN BIT(4)
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#define OP_ANI_RUNNING BIT(5)
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#define OP_TSF_RESET BIT(6)
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struct ath9k_htc_priv {
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struct ieee80211_hw *hw;
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struct htc_target *htc;
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u16 fw_version_major;
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u16 fw_version_minor;
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enum htc_endpoint_id wmi_cmd_ep;
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enum htc_endpoint_id beacon_ep;
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enum htc_endpoint_id cab_ep;
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enum htc_endpoint_id uapsd_ep;
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enum htc_endpoint_id mgmt_ep;
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enum htc_endpoint_id data_be_ep;
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enum htc_endpoint_id data_bk_ep;
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enum htc_endpoint_id data_vi_ep;
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enum htc_endpoint_id data_vo_ep;
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u8 vif_sta_pos[ATH9K_HTC_MAX_VIF];
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u8 num_sta_assoc_vif;
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bool reconfig_beacon;
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unsigned int rxfilter;
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struct ath9k_hw_cal_data caldata;
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struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
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spinlock_t beacon_lock;
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struct htc_beacon_config cur_beacon_conf;
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struct ath9k_htc_rx rx;
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struct ath9k_htc_tx tx;
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struct tasklet_struct swba_tasklet;
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struct tasklet_struct rx_tasklet;
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struct delayed_work ani_work;
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struct tasklet_struct tx_failed_tasklet;
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struct work_struct ps_work;
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struct work_struct fatal_work;
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struct mutex htc_pm_lock;
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unsigned long ps_usecount;
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#ifdef CONFIG_MAC80211_LEDS
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enum led_brightness brightness;
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struct led_classdev led_cdev;
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struct work_struct led_work;
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int hwq_map[WME_NUM_AC];
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struct ath_btcoex btcoex;
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struct delayed_work coex_period_work;
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struct delayed_work duty_cycle_work;
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#ifdef CONFIG_ATH9K_HTC_DEBUGFS
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struct ath9k_debug debug;
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static inline void ath_read_cachesize(struct ath_common *common, int *csz)
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common->bus_ops->read_cachesize(common, csz);
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void ath9k_htc_reset(struct ath9k_htc_priv *priv);
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void ath9k_htc_assign_bslot(struct ath9k_htc_priv *priv,
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struct ieee80211_vif *vif);
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void ath9k_htc_remove_bslot(struct ath9k_htc_priv *priv,
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struct ieee80211_vif *vif);
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void ath9k_htc_set_tsfadjust(struct ath9k_htc_priv *priv,
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struct ieee80211_vif *vif);
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void ath9k_htc_beaconq_config(struct ath9k_htc_priv *priv);
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void ath9k_htc_beacon_config(struct ath9k_htc_priv *priv,
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struct ieee80211_vif *vif);
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void ath9k_htc_beacon_reconfig(struct ath9k_htc_priv *priv);
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void ath9k_htc_swba(struct ath9k_htc_priv *priv,
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struct wmi_event_swba *swba);
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void ath9k_htc_rxep(void *priv, struct sk_buff *skb,
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enum htc_endpoint_id ep_id);
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void ath9k_htc_txep(void *priv, struct sk_buff *skb, enum htc_endpoint_id ep_id,
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void ath9k_htc_beaconep(void *drv_priv, struct sk_buff *skb,
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enum htc_endpoint_id ep_id, bool txok);
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int ath9k_htc_update_cap_target(struct ath9k_htc_priv *priv,
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void ath9k_htc_ani_work(struct work_struct *work);
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void ath9k_htc_start_ani(struct ath9k_htc_priv *priv);
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void ath9k_htc_stop_ani(struct ath9k_htc_priv *priv);
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int ath9k_tx_init(struct ath9k_htc_priv *priv);
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int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
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struct sk_buff *skb, u8 slot, bool is_cab);
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void ath9k_tx_cleanup(struct ath9k_htc_priv *priv);
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bool ath9k_htc_txq_setup(struct ath9k_htc_priv *priv, int subtype);
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int ath9k_htc_cabq_setup(struct ath9k_htc_priv *priv);
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int get_hw_qnum(u16 queue, int *hwq_map);
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int ath_htc_txq_update(struct ath9k_htc_priv *priv, int qnum,
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struct ath9k_tx_queue_info *qinfo);
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void ath9k_htc_check_stop_queues(struct ath9k_htc_priv *priv);
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void ath9k_htc_check_wake_queues(struct ath9k_htc_priv *priv);
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int ath9k_htc_tx_get_slot(struct ath9k_htc_priv *priv);
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void ath9k_htc_tx_clear_slot(struct ath9k_htc_priv *priv, int slot);
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void ath9k_htc_tx_drain(struct ath9k_htc_priv *priv);
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void ath9k_htc_txstatus(struct ath9k_htc_priv *priv, void *wmi_event);
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void ath9k_tx_failed_tasklet(unsigned long data);
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void ath9k_htc_tx_cleanup_timer(unsigned long data);
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int ath9k_rx_init(struct ath9k_htc_priv *priv);
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void ath9k_rx_cleanup(struct ath9k_htc_priv *priv);
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void ath9k_host_rx_init(struct ath9k_htc_priv *priv);
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void ath9k_rx_tasklet(unsigned long data);
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u32 ath9k_htc_calcrxfilter(struct ath9k_htc_priv *priv);
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void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv);
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void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv);
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void ath9k_ps_work(struct work_struct *work);
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bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
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enum ath9k_power_mode mode);
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void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv);
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void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw);
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void ath9k_htc_radio_enable(struct ieee80211_hw *hw);
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void ath9k_htc_radio_disable(struct ieee80211_hw *hw);
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#ifdef CONFIG_MAC80211_LEDS
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void ath9k_init_leds(struct ath9k_htc_priv *priv);
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void ath9k_deinit_leds(struct ath9k_htc_priv *priv);
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void ath9k_led_work(struct work_struct *work);
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static inline void ath9k_init_leds(struct ath9k_htc_priv *priv)
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static inline void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
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static inline void ath9k_led_work(struct work_struct *work)
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int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
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u16 devid, char *product, u32 drv_info);
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void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug);
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void ath9k_htc_suspend(struct htc_target *htc_handle);
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int ath9k_htc_resume(struct htc_target *htc_handle);
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#ifdef CONFIG_ATH9K_HTC_DEBUGFS
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int ath9k_htc_init_debug(struct ath_hw *ah);
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static inline int ath9k_htc_init_debug(struct ath_hw *ah) { return 0; };
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#endif /* CONFIG_ATH9K_HTC_DEBUGFS */