Merge branch 'for-linville' of git://github.com/kvalo/ath6kl

drivers/net/wireless/ath/ath6kl/Makefile

@@ -23,7 +23,7 @@
 
 obj-$(CONFIG_ATH6KL) := ath6kl.o
 ath6kl-y += debug.o
-ath6kl-y += htc_hif.o
+ath6kl-y += hif.o
 ath6kl-y += htc.o
 ath6kl-y += bmi.o
 ath6kl-y += cfg80211.o

drivers/net/wireless/ath/ath6kl/bmi.c

@@ -196,8 +196,6 @@ int ath6kl_bmi_done(struct ath6kl *ar)
 		return ret;
 	}
 
-	ath6kl_bmi_cleanup(ar);
-
 	return 0;
 }
 
@@ -672,6 +670,11 @@ int ath6kl_bmi_fast_download(struct ath6kl *ar, u32 addr, u8 *buf, u32 len)
 	return ret;
 }
 
+void ath6kl_bmi_reset(struct ath6kl *ar)
+{
+	ar->bmi.done_sent = false;
+}
+
 int ath6kl_bmi_init(struct ath6kl *ar)
 {
 	ar->bmi.cmd_buf = kzalloc(MAX_BMI_CMDBUF_SZ, GFP_ATOMIC);

drivers/net/wireless/ath/ath6kl/bmi.h

@@ -230,6 +230,8 @@ struct ath6kl_bmi_target_info {
 
 int ath6kl_bmi_init(struct ath6kl *ar);
 void ath6kl_bmi_cleanup(struct ath6kl *ar);
+void ath6kl_bmi_reset(struct ath6kl *ar);
+
 int ath6kl_bmi_done(struct ath6kl *ar);
 int ath6kl_bmi_get_target_info(struct ath6kl *ar,
 			       struct ath6kl_bmi_target_info *targ_info);

drivers/net/wireless/ath/ath6kl/cfg80211.h

@@ -17,23 +17,41 @@
 #ifndef ATH6KL_CFG80211_H
 #define ATH6KL_CFG80211_H
 
-struct wireless_dev *ath6kl_cfg80211_init(struct device *dev);
-void ath6kl_cfg80211_deinit(struct ath6kl *ar);
+enum ath6kl_cfg_suspend_mode {
+	ATH6KL_CFG_SUSPEND_DEEPSLEEP,
+	ATH6KL_CFG_SUSPEND_CUTPOWER,
+	ATH6KL_CFG_SUSPEND_WOW
+};
 
-void ath6kl_cfg80211_scan_complete_event(struct ath6kl *ar, int status);
+struct net_device *ath6kl_interface_add(struct ath6kl *ar, char *name,
+					enum nl80211_iftype type,
+					u8 fw_vif_idx, u8 nw_type);
+int ath6kl_register_ieee80211_hw(struct ath6kl *ar);
+struct ath6kl *ath6kl_core_alloc(struct device *dev);
+void ath6kl_deinit_ieee80211_hw(struct ath6kl *ar);
 
-void ath6kl_cfg80211_connect_event(struct ath6kl *ar, u16 channel,
+void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted);
+
+void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
 				   u8 *bssid, u16 listen_intvl,
 				   u16 beacon_intvl,
 				   enum network_type nw_type,
 				   u8 beacon_ie_len, u8 assoc_req_len,
 				   u8 assoc_resp_len, u8 *assoc_info);
 
-void ath6kl_cfg80211_disconnect_event(struct ath6kl *ar, u8 reason,
+void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
 				      u8 *bssid, u8 assoc_resp_len,
 				      u8 *assoc_info, u16 proto_reason);
 
-void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl *ar, u8 keyid,
+void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
 				     bool ismcast);
 
+int ath6kl_cfg80211_suspend(struct ath6kl *ar,
+			    enum ath6kl_cfg_suspend_mode mode,
+			    struct cfg80211_wowlan *wow);
+
+int ath6kl_cfg80211_resume(struct ath6kl *ar);
+
+void ath6kl_cfg80211_stop(struct ath6kl *ar);
+
 #endif /* ATH6KL_CFG80211_H */

drivers/net/wireless/ath/ath6kl/common.h

@@ -23,8 +23,6 @@
 
 extern int ath6kl_printk(const char *level, const char *fmt, ...);
 
-#define A_CACHE_LINE_PAD            128
-
 /*
  * Reflects the version of binary interface exposed by ATH6KL target
  * firmware. Needs to be incremented by 1 for any change in the firmware
@@ -78,20 +76,10 @@ enum crypto_type {
 struct htc_endpoint_credit_dist;
 struct ath6kl;
 enum htc_credit_dist_reason;
-struct htc_credit_state_info;
+struct ath6kl_htc_credit_info;
 
-int ath6k_setup_credit_dist(void *htc_handle,
-			    struct htc_credit_state_info *cred_info);
-void ath6k_credit_distribute(struct htc_credit_state_info *cred_inf,
-			     struct list_head *epdist_list,
-			     enum htc_credit_dist_reason reason);
-void ath6k_credit_init(struct htc_credit_state_info *cred_inf,
-		       struct list_head *ep_list,
-		       int tot_credits);
-void ath6k_seek_credits(struct htc_credit_state_info *cred_inf,
-			struct htc_endpoint_credit_dist *ep_dist);
 struct ath6kl *ath6kl_core_alloc(struct device *sdev);
 int ath6kl_core_init(struct ath6kl *ar);
-int ath6kl_unavail_ev(struct ath6kl *ar);
+void ath6kl_core_cleanup(struct ath6kl *ar);
 struct sk_buff *ath6kl_buf_alloc(int size);
 #endif /* COMMON_H */

drivers/net/wireless/ath/ath6kl/core.h

@@ -166,6 +166,7 @@ struct ath6kl_fw_ie {
 #define ATH6KL_CONF_IGNORE_PS_FAIL_EVT_IN_SCAN  BIT(1)
 #define ATH6KL_CONF_ENABLE_11N			BIT(2)
 #define ATH6KL_CONF_ENABLE_TX_BURST		BIT(3)
+#define ATH6KL_CONF_SUSPEND_CUTPOWER		BIT(4)
 
 enum wlan_low_pwr_state {
 	WLAN_POWER_STATE_ON,
@@ -380,40 +381,33 @@ struct ath6kl_req_key {
 	u8 key_len;
 };
 
-/* Flag info */
-#define WMI_ENABLED	0
-#define WMI_READY	1
-#define CONNECTED	2
-#define STATS_UPDATE_PEND 3
-#define CONNECT_PEND	  4
-#define WMM_ENABLED	  5
-#define NETQ_STOPPED	  6
-#define WMI_CTRL_EP_FULL  7
-#define DTIM_EXPIRED	  8
-#define DESTROY_IN_PROGRESS  9
-#define NETDEV_REGISTERED    10
-#define SKIP_SCAN	     11
-#define WLAN_ENABLED	     12
-#define TESTMODE	     13
-#define CLEAR_BSSFILTER_ON_BEACON 14
-#define DTIM_PERIOD_AVAIL    15
+#define MAX_NUM_VIF	1
+
+/* vif flags info */
+enum ath6kl_vif_state {
+	CONNECTED,
+	CONNECT_PEND,
+	WMM_ENABLED,
+	NETQ_STOPPED,
+	DTIM_EXPIRED,
+	NETDEV_REGISTERED,
+	CLEAR_BSSFILTER_ON_BEACON,
+	DTIM_PERIOD_AVAIL,
+	WLAN_ENABLED,
+	STATS_UPDATE_PEND,
+};
 
-struct ath6kl {
-	struct device *dev;
-	struct net_device *net_dev;
-	struct ath6kl_bmi bmi;
-	const struct ath6kl_hif_ops *hif_ops;
-	struct wmi *wmi;
-	int tx_pending[ENDPOINT_MAX];
-	int total_tx_data_pend;
-	struct htc_target *htc_target;
-	void *hif_priv;
-	spinlock_t lock;
-	struct semaphore sem;
+struct ath6kl_vif {
+	struct list_head list;
+	struct wireless_dev wdev;
+	struct net_device *ndev;
+	struct ath6kl *ar;
+	/* Lock to protect vif specific net_stats and flags */
+	spinlock_t if_lock;
+	u8 fw_vif_idx;
+	unsigned long flags;
 	int ssid_len;
 	u8 ssid[IEEE80211_MAX_SSID_LEN];
-	u8 next_mode;
-	u8 nw_type;
 	u8 dot11_auth_mode;
 	u8 auth_mode;
 	u8 prwise_crypto;
@@ -421,21 +415,83 @@ struct ath6kl {
 	u8 grp_crypto;
 	u8 grp_crypto_len;
 	u8 def_txkey_index;
-	struct ath6kl_wep_key wep_key_list[WMI_MAX_KEY_INDEX + 1];
+	u8 next_mode;
+	u8 nw_type;
 	u8 bssid[ETH_ALEN];
 	u8 req_bssid[ETH_ALEN];
 	u16 ch_hint;
 	u16 bss_ch;
+	struct ath6kl_wep_key wep_key_list[WMI_MAX_KEY_INDEX + 1];
+	struct ath6kl_key keys[WMI_MAX_KEY_INDEX + 1];
+	struct aggr_info *aggr_cntxt;
+	struct timer_list disconnect_timer;
+	struct cfg80211_scan_request *scan_req;
+	enum sme_state sme_state;
+	int reconnect_flag;
+	u32 last_roc_id;
+	u32 last_cancel_roc_id;
+	u32 send_action_id;
+	bool probe_req_report;
+	u16 next_chan;
+	u16 assoc_bss_beacon_int;
+	u8 assoc_bss_dtim_period;
+	struct net_device_stats net_stats;
+	struct target_stats target_stats;
+};
+
+#define WOW_LIST_ID		0
+#define WOW_HOST_REQ_DELAY	500 /* ms */
+
+/* Flag info */
+enum ath6kl_dev_state {
+	WMI_ENABLED,
+	WMI_READY,
+	WMI_CTRL_EP_FULL,
+	TESTMODE,
+	DESTROY_IN_PROGRESS,
+	SKIP_SCAN,
+	ROAM_TBL_PEND,
+	FIRST_BOOT,
+};
+
+enum ath6kl_state {
+	ATH6KL_STATE_OFF,
+	ATH6KL_STATE_ON,
+	ATH6KL_STATE_DEEPSLEEP,
+	ATH6KL_STATE_CUTPOWER,
+	ATH6KL_STATE_WOW,
+};
+
+struct ath6kl {
+	struct device *dev;
+	struct wiphy *wiphy;
+
+	enum ath6kl_state state;
+
+	struct ath6kl_bmi bmi;
+	const struct ath6kl_hif_ops *hif_ops;
+	struct wmi *wmi;
+	int tx_pending[ENDPOINT_MAX];
+	int total_tx_data_pend;
+	struct htc_target *htc_target;
+	void *hif_priv;
+	struct list_head vif_list;
+	/* Lock to avoid race in vif_list entries among add/del/traverse */
+	spinlock_t list_lock;
+	u8 num_vif;
+	u8 max_norm_iface;
+	u8 avail_idx_map;
+	spinlock_t lock;
+	struct semaphore sem;
 	u16 listen_intvl_b;
 	u16 listen_intvl_t;
 	u8 lrssi_roam_threshold;
 	struct ath6kl_version version;
 	u32 target_type;
 	u8 tx_pwr;
-	struct net_device_stats net_stats;
-	struct target_stats target_stats;
 	struct ath6kl_node_mapping node_map[MAX_NODE_NUM];
 	u8 ibss_ps_enable;
+	bool ibss_if_active;
 	u8 node_num;
 	u8 next_ep_id;
 	struct ath6kl_cookie *cookie_list;
@@ -446,7 +502,7 @@ struct ath6kl {
 	u8 hiac_stream_active_pri;
 	u8 ep2ac_map[ENDPOINT_MAX];
 	enum htc_endpoint_id ctrl_ep;
-	struct htc_credit_state_info credit_state_info;
+	struct ath6kl_htc_credit_info credit_state_info;
 	u32 connect_ctrl_flags;
 	u32 user_key_ctrl;
 	u8 usr_bss_filter;
@@ -456,18 +512,13 @@ struct ath6kl {
 	struct sk_buff_head mcastpsq;
 	spinlock_t mcastpsq_lock;
 	u8 intra_bss;
-	struct aggr_info *aggr_cntxt;
 	struct wmi_ap_mode_stat ap_stats;
 	u8 ap_country_code[3];
 	struct list_head amsdu_rx_buffer_queue;
-	struct timer_list disconnect_timer;
 	u8 rx_meta_ver;
-	struct wireless_dev *wdev;
-	struct cfg80211_scan_request *scan_req;
-	struct ath6kl_key keys[WMI_MAX_KEY_INDEX + 1];
-	enum sme_state sme_state;
 	enum wlan_low_pwr_state wlan_pwr_state;
 	struct wmi_scan_params_cmd sc_params;
+	u8 mac_addr[ETH_ALEN];
 #define AR_MCAST_FILTER_MAC_ADDR_SIZE  4
 	struct {
 		void *rx_report;
@@ -487,7 +538,6 @@ struct ath6kl {
 	struct ath6kl_mbox_info mbox_info;
 
 	struct ath6kl_cookie cookie_mem[MAX_COOKIE_NUM];
-	int reconnect_flag;
 	unsigned long flag;
 
 	u8 *fw_board;
@@ -508,13 +558,7 @@ struct ath6kl {
 
 	struct dentry *debugfs_phy;
 
-	u32 send_action_id;
-	bool probe_req_report;
-	u16 next_chan;
-
 	bool p2p;
-	u16 assoc_bss_beacon_int;
-	u8 assoc_bss_dtim_period;
 
 #ifdef CONFIG_ATH6KL_DEBUG
 	struct {
@@ -529,23 +573,19 @@ struct ath6kl {
 		struct {
 			unsigned int invalid_rate;
 		} war_stats;
+
+		u8 *roam_tbl;
+		unsigned int roam_tbl_len;
+
+		u8 keepalive;
+		u8 disc_timeout;
 	} debug;
 #endif /* CONFIG_ATH6KL_DEBUG */
 };
 
 static inline void *ath6kl_priv(struct net_device *dev)
 {
-	return wdev_priv(dev->ieee80211_ptr);
-}
-
-static inline void ath6kl_deposit_credit_to_ep(struct htc_credit_state_info
-					       *cred_info,
-					       struct htc_endpoint_credit_dist
-					       *ep_dist, int credits)
-{
-	ep_dist->credits += credits;
-	ep_dist->cred_assngd += credits;
-	cred_info->cur_free_credits -= credits;
+	return ((struct ath6kl_vif *) netdev_priv(dev))->ar;
 }
 
 static inline u32 ath6kl_get_hi_item_addr(struct ath6kl *ar,
@@ -561,7 +601,6 @@ static inline u32 ath6kl_get_hi_item_addr(struct ath6kl *ar,
 	return addr;
 }
 
-void ath6kl_destroy(struct net_device *dev, unsigned int unregister);
 int ath6kl_configure_target(struct ath6kl *ar);
 void ath6kl_detect_error(unsigned long ptr);
 void disconnect_timer_handler(unsigned long ptr);
@@ -579,10 +618,8 @@ int ath6kl_diag_write(struct ath6kl *ar, u32 address, void *data, u32 length);
 int ath6kl_diag_read32(struct ath6kl *ar, u32 address, u32 *value);
 int ath6kl_diag_read(struct ath6kl *ar, u32 address, void *data, u32 length);
 int ath6kl_read_fwlogs(struct ath6kl *ar);
-void ath6kl_init_profile_info(struct ath6kl *ar);
+void ath6kl_init_profile_info(struct ath6kl_vif *vif);
 void ath6kl_tx_data_cleanup(struct ath6kl *ar);
-void ath6kl_stop_endpoint(struct net_device *dev, bool keep_profile,
-			  bool get_dbglogs);
 
 struct ath6kl_cookie *ath6kl_alloc_cookie(struct ath6kl *ar);
 void ath6kl_free_cookie(struct ath6kl *ar, struct ath6kl_cookie *cookie);
@@ -598,40 +635,49 @@ struct htc_packet *ath6kl_alloc_amsdu_rxbuf(struct htc_target *target,
 void aggr_module_destroy(struct aggr_info *aggr_info);
 void aggr_reset_state(struct aggr_info *aggr_info);
 
-struct ath6kl_sta *ath6kl_find_sta(struct ath6kl *ar, u8 * node_addr);
+struct ath6kl_sta *ath6kl_find_sta(struct ath6kl_vif *vif, u8 * node_addr);
 struct ath6kl_sta *ath6kl_find_sta_by_aid(struct ath6kl *ar, u8 aid);
 
 void ath6kl_ready_event(void *devt, u8 * datap, u32 sw_ver, u32 abi_ver);
 int ath6kl_control_tx(void *devt, struct sk_buff *skb,
 		      enum htc_endpoint_id eid);
-void ath6kl_connect_event(struct ath6kl *ar, u16 channel,
+void ath6kl_connect_event(struct ath6kl_vif *vif, u16 channel,
 			  u8 *bssid, u16 listen_int,
 			  u16 beacon_int, enum network_type net_type,
 			  u8 beacon_ie_len, u8 assoc_req_len,
 			  u8 assoc_resp_len, u8 *assoc_info);
-void ath6kl_connect_ap_mode_bss(struct ath6kl *ar, u16 channel);
-void ath6kl_connect_ap_mode_sta(struct ath6kl *ar, u16 aid, u8 *mac_addr,
+void ath6kl_connect_ap_mode_bss(struct ath6kl_vif *vif, u16 channel);
+void ath6kl_connect_ap_mode_sta(struct ath6kl_vif *vif, u16 aid, u8 *mac_addr,
 				u8 keymgmt, u8 ucipher, u8 auth,
 				u8 assoc_req_len, u8 *assoc_info);
-void ath6kl_disconnect_event(struct ath6kl *ar, u8 reason,
+void ath6kl_disconnect_event(struct ath6kl_vif *vif, u8 reason,
 			     u8 *bssid, u8 assoc_resp_len,
 			     u8 *assoc_info, u16 prot_reason_status);
-void ath6kl_tkip_micerr_event(struct ath6kl *ar, u8 keyid, bool ismcast);
+void ath6kl_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid, bool ismcast);
 void ath6kl_txpwr_rx_evt(void *devt, u8 tx_pwr);
-void ath6kl_scan_complete_evt(struct ath6kl *ar, int status);
-void ath6kl_tgt_stats_event(struct ath6kl *ar, u8 *ptr, u32 len);
+void ath6kl_scan_complete_evt(struct ath6kl_vif *vif, int status);
+void ath6kl_tgt_stats_event(struct ath6kl_vif *vif, u8 *ptr, u32 len);
 void ath6kl_indicate_tx_activity(void *devt, u8 traffic_class, bool active);
 enum htc_endpoint_id ath6kl_ac2_endpoint_id(void *devt, u8 ac);
 
-void ath6kl_pspoll_event(struct ath6kl *ar, u8 aid);
+void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid);
 
-void ath6kl_dtimexpiry_event(struct ath6kl *ar);
-void ath6kl_disconnect(struct ath6kl *ar);
-void ath6kl_deep_sleep_enable(struct ath6kl *ar);
-void aggr_recv_delba_req_evt(struct ath6kl *ar, u8 tid);
-void aggr_recv_addba_req_evt(struct ath6kl *ar, u8 tid, u16 seq_no,
+void ath6kl_dtimexpiry_event(struct ath6kl_vif *vif);
+void ath6kl_disconnect(struct ath6kl_vif *vif);
+void aggr_recv_delba_req_evt(struct ath6kl_vif *vif, u8 tid);
+void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid, u16 seq_no,
 			     u8 win_sz);
 void ath6kl_wakeup_event(void *dev);
-void ath6kl_target_failure(struct ath6kl *ar);
+
+void ath6kl_reset_device(struct ath6kl *ar, u32 target_type,
+			 bool wait_fot_compltn, bool cold_reset);
+void ath6kl_init_control_info(struct ath6kl_vif *vif);
+void ath6kl_deinit_if_data(struct ath6kl_vif *vif);
+void ath6kl_core_free(struct ath6kl *ar);
+struct ath6kl_vif *ath6kl_vif_first(struct ath6kl *ar);
+void ath6kl_cleanup_vif(struct ath6kl_vif *vif, bool wmi_ready);
+int ath6kl_init_hw_start(struct ath6kl *ar);
+int ath6kl_init_hw_stop(struct ath6kl *ar);
+void ath6kl_check_wow_status(struct ath6kl *ar);
 
 #endif /* CORE_H */

drivers/net/wireless/ath/ath6kl/debug.h

@@ -17,19 +17,19 @@
 #ifndef DEBUG_H
 #define DEBUG_H
 
-#include "htc_hif.h"
+#include "hif.h"
 
 enum ATH6K_DEBUG_MASK {
-	ATH6KL_DBG_WLAN_CONNECT = BIT(0),     /* wlan connect */
-	ATH6KL_DBG_WLAN_SCAN    = BIT(1),     /* wlan scan */
+	ATH6KL_DBG_CREDIT	= BIT(0),
+	/* hole */
 	ATH6KL_DBG_WLAN_TX      = BIT(2),     /* wlan tx */
 	ATH6KL_DBG_WLAN_RX      = BIT(3),     /* wlan rx */
 	ATH6KL_DBG_BMI		= BIT(4),     /* bmi tracing */
-	ATH6KL_DBG_HTC_SEND     = BIT(5),     /* htc send */
-	ATH6KL_DBG_HTC_RECV     = BIT(6),     /* htc recv */
+	ATH6KL_DBG_HTC		= BIT(5),
+	ATH6KL_DBG_HIF		= BIT(6),
 	ATH6KL_DBG_IRQ		= BIT(7),     /* interrupt processing */
-	ATH6KL_DBG_PM           = BIT(8),     /* power management */
-	ATH6KL_DBG_WLAN_NODE    = BIT(9),     /* general wlan node tracing */
+	/* hole */
+	/* hole */
 	ATH6KL_DBG_WMI          = BIT(10),    /* wmi tracing */
 	ATH6KL_DBG_TRC	        = BIT(11),    /* generic func tracing */
 	ATH6KL_DBG_SCATTER	= BIT(12),    /* hif scatter tracing */
@@ -40,6 +40,7 @@ enum ATH6K_DEBUG_MASK {
 	ATH6KL_DBG_SDIO_DUMP	= BIT(17),
 	ATH6KL_DBG_BOOT		= BIT(18),    /* driver init and fw boot */
 	ATH6KL_DBG_WMI_DUMP	= BIT(19),
+	ATH6KL_DBG_SUSPEND	= BIT(20),
 	ATH6KL_DBG_ANY	        = 0xffffffff  /* enable all logs */
 };
 
@@ -90,6 +91,10 @@ void ath6kl_dump_registers(struct ath6kl_device *dev,
 void dump_cred_dist_stats(struct htc_target *target);
 void ath6kl_debug_fwlog_event(struct ath6kl *ar, const void *buf, size_t len);
 void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war);
+int ath6kl_debug_roam_tbl_event(struct ath6kl *ar, const void *buf,
+				size_t len);
+void ath6kl_debug_set_keepalive(struct ath6kl *ar, u8 keepalive);
+void ath6kl_debug_set_disconnect_timeout(struct ath6kl *ar, u8 timeout);
 int ath6kl_debug_init(struct ath6kl *ar);
 void ath6kl_debug_cleanup(struct ath6kl *ar);
 
@@ -125,6 +130,21 @@ static inline void ath6kl_debug_war(struct ath6kl *ar, enum ath6kl_war war)
 {
 }
 
+static inline int ath6kl_debug_roam_tbl_event(struct ath6kl *ar,
+					      const void *buf, size_t len)
+{
+	return 0;
+}
+
+static inline void ath6kl_debug_set_keepalive(struct ath6kl *ar, u8 keepalive)
+{
+}
+
+static inline void ath6kl_debug_set_disconnect_timeout(struct ath6kl *ar,
+						       u8 timeout)
+{
+}
+
 static inline int ath6kl_debug_init(struct ath6kl *ar)
 {
 	return 0;

drivers/net/wireless/ath/ath6kl/hif-ops.h

@@ -18,10 +18,16 @@
 #define HIF_OPS_H
 
 #include "hif.h"
+#include "debug.h"
 
 static inline int hif_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf,
 				      u32 len, u32 request)
 {
+	ath6kl_dbg(ATH6KL_DBG_HIF,
+		   "hif %s sync addr 0x%x buf 0x%p len %d request 0x%x\n",
+		   (request & HIF_WRITE) ? "write" : "read",
+		   addr, buf, len, request);
+
 	return ar->hif_ops->read_write_sync(ar, addr, buf, len, request);
 }
 
@@ -29,16 +35,24 @@ static inline int hif_write_async(struct ath6kl *ar, u32 address, u8 *buffer,
 				  u32 length, u32 request,
 				  struct htc_packet *packet)
 {
+	ath6kl_dbg(ATH6KL_DBG_HIF,
+		   "hif write async addr 0x%x buf 0x%p len %d request 0x%x\n",
+		   address, buffer, length, request);
+
 	return ar->hif_ops->write_async(ar, address, buffer, length,
 					request, packet);
 }
 static inline void ath6kl_hif_irq_enable(struct ath6kl *ar)
 {
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif irq enable\n");
+
 	return ar->hif_ops->irq_enable(ar);
 }
 
 static inline void ath6kl_hif_irq_disable(struct ath6kl *ar)
 {
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif irq disable\n");
+
 	return ar->hif_ops->irq_disable(ar);
 }
 
@@ -69,9 +83,40 @@ static inline void ath6kl_hif_cleanup_scatter(struct ath6kl *ar)
 	return ar->hif_ops->cleanup_scatter(ar);
 }
 
-static inline int ath6kl_hif_suspend(struct ath6kl *ar)
+static inline int ath6kl_hif_suspend(struct ath6kl *ar,
+				     struct cfg80211_wowlan *wow)
 {
-	return ar->hif_ops->suspend(ar);
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif suspend\n");
+
+	return ar->hif_ops->suspend(ar, wow);
+}
+
+static inline int ath6kl_hif_resume(struct ath6kl *ar)
+{
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif resume\n");
+
+	return ar->hif_ops->resume(ar);
+}
+
+static inline int ath6kl_hif_power_on(struct ath6kl *ar)
+{
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif power on\n");
+
+	return ar->hif_ops->power_on(ar);
+}
+
+static inline int ath6kl_hif_power_off(struct ath6kl *ar)
+{
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif power off\n");
+
+	return ar->hif_ops->power_off(ar);
+}
+
+static inline void ath6kl_hif_stop(struct ath6kl *ar)
+{
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif stop\n");
+
+	ar->hif_ops->stop(ar);
 }
 
 #endif

drivers/net/wireless/ath/ath6kl/htc_hif.c → drivers/net/wireless/ath/ath6kl/hif.c

@@ -13,18 +13,19 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
+#include "hif.h"
 
 #include "core.h"
 #include "target.h"
 #include "hif-ops.h"
-#include "htc_hif.h"
 #include "debug.h"
 
 #define MAILBOX_FOR_BLOCK_SIZE          1
 
 #define ATH6KL_TIME_QUANTUM	10  /* in ms */
 
-static int ath6kldev_cp_scat_dma_buf(struct hif_scatter_req *req, bool from_dma)
+static int ath6kl_hif_cp_scat_dma_buf(struct hif_scatter_req *req,
+				      bool from_dma)
 {
 	u8 *buf;
 	int i;
@@ -46,12 +47,11 @@ static int ath6kldev_cp_scat_dma_buf(struct hif_scatter_req *req, bool from_dma)
 	return 0;
 }
 
-int ath6kldev_rw_comp_handler(void *context, int status)
+int ath6kl_hif_rw_comp_handler(void *context, int status)
 {
 	struct htc_packet *packet = context;
 
-	ath6kl_dbg(ATH6KL_DBG_HTC_RECV,
-		   "ath6kldev_rw_comp_handler (pkt:0x%p , status: %d\n",
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif rw completion pkt 0x%p status %d\n",
 		   packet, status);
 
 	packet->status = status;
@@ -59,30 +59,83 @@ int ath6kldev_rw_comp_handler(void *context, int status)
 
 	return 0;
 }
+#define REG_DUMP_COUNT_AR6003   60
+#define REGISTER_DUMP_LEN_MAX   60
 
-static int ath6kldev_proc_dbg_intr(struct ath6kl_device *dev)
+static void ath6kl_hif_dump_fw_crash(struct ath6kl *ar)
 {
-	u32 dummy;
-	int status;
+	__le32 regdump_val[REGISTER_DUMP_LEN_MAX];
+	u32 i, address, regdump_addr = 0;
+	int ret;
+
+	if (ar->target_type != TARGET_TYPE_AR6003)
+		return;
+
+	/* the reg dump pointer is copied to the host interest area */
+	address = ath6kl_get_hi_item_addr(ar, HI_ITEM(hi_failure_state));
+	address = TARG_VTOP(ar->target_type, address);
+
+	/* read RAM location through diagnostic window */
+	ret = ath6kl_diag_read32(ar, address, &regdump_addr);
+
+	if (ret || !regdump_addr) {
+		ath6kl_warn("failed to get ptr to register dump area: %d\n",
+			    ret);
+		return;
+	}
+
+	ath6kl_dbg(ATH6KL_DBG_IRQ, "register dump data address 0x%x\n",
+		regdump_addr);
+	regdump_addr = TARG_VTOP(ar->target_type, regdump_addr);
+
+	/* fetch register dump data */
+	ret = ath6kl_diag_read(ar, regdump_addr, (u8 *)&regdump_val[0],
+				  REG_DUMP_COUNT_AR6003 * (sizeof(u32)));
+	if (ret) {
+		ath6kl_warn("failed to get register dump: %d\n", ret);
+		return;
+	}
+
+	ath6kl_info("crash dump:\n");
+	ath6kl_info("hw 0x%x fw %s\n", ar->wiphy->hw_version,
+		    ar->wiphy->fw_version);
+
+	BUILD_BUG_ON(REG_DUMP_COUNT_AR6003 % 4);
 
-	ath6kl_err("target debug interrupt\n");
+	for (i = 0; i < REG_DUMP_COUNT_AR6003 / 4; i++) {
+		ath6kl_info("%d: 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x\n",
+			    4 * i,
+			    le32_to_cpu(regdump_val[i]),
+			    le32_to_cpu(regdump_val[i + 1]),
+			    le32_to_cpu(regdump_val[i + 2]),
+			    le32_to_cpu(regdump_val[i + 3]));
+	}
+
+}
+
+static int ath6kl_hif_proc_dbg_intr(struct ath6kl_device *dev)
+{
+	u32 dummy;
+	int ret;
 
-	ath6kl_target_failure(dev->ar);
+	ath6kl_warn("firmware crashed\n");
 
 	/*
 	 * read counter to clear the interrupt, the debug error interrupt is
 	 * counter 0.
 	 */
-	status = hif_read_write_sync(dev->ar, COUNT_DEC_ADDRESS,
+	ret = hif_read_write_sync(dev->ar, COUNT_DEC_ADDRESS,
 				     (u8 *)&dummy, 4, HIF_RD_SYNC_BYTE_INC);
-	if (status)
-		WARN_ON(1);
+	if (ret)
+		ath6kl_warn("Failed to clear debug interrupt: %d\n", ret);
 
-	return status;
+	ath6kl_hif_dump_fw_crash(dev->ar);
+
+	return ret;
 }
 
 /* mailbox recv message polling */
-int ath6kldev_poll_mboxmsg_rx(struct ath6kl_device *dev, u32 *lk_ahd,
+int ath6kl_hif_poll_mboxmsg_rx(struct ath6kl_device *dev, u32 *lk_ahd,
 			      int timeout)
 {
 	struct ath6kl_irq_proc_registers *rg;
@@ -118,7 +171,7 @@ int ath6kldev_poll_mboxmsg_rx(struct ath6kl_device *dev, u32 *lk_ahd,
 
 		/* delay a little  */
 		mdelay(ATH6KL_TIME_QUANTUM);
-		ath6kl_dbg(ATH6KL_DBG_HTC_RECV, "retry mbox poll : %d\n", i);
+		ath6kl_dbg(ATH6KL_DBG_HIF, "hif retry mbox poll try %d\n", i);
 	}
 
 	if (i == 0) {
@@ -131,7 +184,7 @@ int ath6kldev_poll_mboxmsg_rx(struct ath6kl_device *dev, u32 *lk_ahd,
 			 * Target failure handler will be called in case of
 			 * an assert.
 			 */
-			ath6kldev_proc_dbg_intr(dev);
+			ath6kl_hif_proc_dbg_intr(dev);
 	}
 
 	return status;
@@ -141,11 +194,14 @@ int ath6kldev_poll_mboxmsg_rx(struct ath6kl_device *dev, u32 *lk_ahd,
  * Disable packet reception (used in case the host runs out of buffers)
  * using the interrupt enable registers through the host I/F
  */
-int ath6kldev_rx_control(struct ath6kl_device *dev, bool enable_rx)
+int ath6kl_hif_rx_control(struct ath6kl_device *dev, bool enable_rx)
 {
 	struct ath6kl_irq_enable_reg regs;
 	int status = 0;
 
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif rx %s\n",
+		   enable_rx ? "enable" : "disable");
+
 	/* take the lock to protect interrupt enable shadows */
 	spin_lock_bh(&dev->lock);
 
@@ -168,7 +224,7 @@ int ath6kldev_rx_control(struct ath6kl_device *dev, bool enable_rx)
 	return status;
 }
 
-int ath6kldev_submit_scat_req(struct ath6kl_device *dev,
+int ath6kl_hif_submit_scat_req(struct ath6kl_device *dev,
 			      struct hif_scatter_req *scat_req, bool read)
 {
 	int status = 0;
@@ -185,14 +241,14 @@ int ath6kldev_submit_scat_req(struct ath6kl_device *dev,
 			dev->ar->mbox_info.htc_addr;
 	}
 
-	ath6kl_dbg((ATH6KL_DBG_HTC_RECV | ATH6KL_DBG_HTC_SEND),
-		   "ath6kldev_submit_scat_req, entries: %d, total len: %d mbox:0x%X (mode: %s : %s)\n",
+	ath6kl_dbg(ATH6KL_DBG_HIF,
+		   "hif submit scatter request entries %d len %d mbox 0x%x %s %s\n",
 		   scat_req->scat_entries, scat_req->len,
 		   scat_req->addr, !read ? "async" : "sync",
 		   (read) ? "rd" : "wr");
 
 	if (!read && scat_req->virt_scat) {
-		status = ath6kldev_cp_scat_dma_buf(scat_req, false);
+		status = ath6kl_hif_cp_scat_dma_buf(scat_req, false);
 		if (status) {
 			scat_req->status = status;
 			scat_req->complete(dev->ar->htc_target, scat_req);
@@ -207,13 +263,13 @@ int ath6kldev_submit_scat_req(struct ath6kl_device *dev,
 		scat_req->status = status;
 		if (!status && scat_req->virt_scat)
 			scat_req->status =
-				ath6kldev_cp_scat_dma_buf(scat_req, true);
+				ath6kl_hif_cp_scat_dma_buf(scat_req, true);
 	}
 
 	return status;
 }
 
-static int ath6kldev_proc_counter_intr(struct ath6kl_device *dev)
+static int ath6kl_hif_proc_counter_intr(struct ath6kl_device *dev)
 {
 	u8 counter_int_status;
 
@@ -232,12 +288,12 @@ static int ath6kldev_proc_counter_intr(struct ath6kl_device *dev)
 	 * the debug assertion counter interrupt.
 	 */
 	if (counter_int_status & ATH6KL_TARGET_DEBUG_INTR_MASK)
-		return ath6kldev_proc_dbg_intr(dev);
+		return ath6kl_hif_proc_dbg_intr(dev);
 
 	return 0;
 }
 
-static int ath6kldev_proc_err_intr(struct ath6kl_device *dev)
+static int ath6kl_hif_proc_err_intr(struct ath6kl_device *dev)
 {
 	int status;
 	u8 error_int_status;
@@ -282,7 +338,7 @@ static int ath6kldev_proc_err_intr(struct ath6kl_device *dev)
 	return status;
 }
 
-static int ath6kldev_proc_cpu_intr(struct ath6kl_device *dev)
+static int ath6kl_hif_proc_cpu_intr(struct ath6kl_device *dev)
 {
 	int status;
 	u8 cpu_int_status;
@@ -417,7 +473,7 @@ static int proc_pending_irqs(struct ath6kl_device *dev, bool *done)
 		 * we rapidly pull packets.
 		 */
 		status = ath6kl_htc_rxmsg_pending_handler(dev->htc_cnxt,
-							  &lk_ahd, &fetched);
+							  lk_ahd, &fetched);
 		if (status)
 			goto out;
 
@@ -436,21 +492,21 @@ static int proc_pending_irqs(struct ath6kl_device *dev, bool *done)
 
 	if (MS(HOST_INT_STATUS_CPU, host_int_status)) {
 		/* CPU Interrupt */
-		status = ath6kldev_proc_cpu_intr(dev);
+		status = ath6kl_hif_proc_cpu_intr(dev);
 		if (status)
 			goto out;
 	}
 
 	if (MS(HOST_INT_STATUS_ERROR, host_int_status)) {
 		/* Error Interrupt */
-		status = ath6kldev_proc_err_intr(dev);
+		status = ath6kl_hif_proc_err_intr(dev);
 		if (status)
 			goto out;
 	}
 
 	if (MS(HOST_INT_STATUS_COUNTER, host_int_status))
 		/* Counter Interrupt */
-		status = ath6kldev_proc_counter_intr(dev);
+		status = ath6kl_hif_proc_counter_intr(dev);
 
 out:
 	/*
@@ -479,9 +535,10 @@ static int proc_pending_irqs(struct ath6kl_device *dev, bool *done)
 }
 
 /* interrupt handler, kicks off all interrupt processing */
-int ath6kldev_intr_bh_handler(struct ath6kl *ar)
+int ath6kl_hif_intr_bh_handler(struct ath6kl *ar)
 {
 	struct ath6kl_device *dev = ar->htc_target->dev;
+	unsigned long timeout;
 	int status = 0;
 	bool done = false;
 
@@ -495,7 +552,8 @@ int ath6kldev_intr_bh_handler(struct ath6kl *ar)
 	 * IRQ processing is synchronous, interrupt status registers can be
 	 * re-read.
 	 */
-	while (!done) {
+	timeout = jiffies + msecs_to_jiffies(ATH6KL_HIF_COMMUNICATION_TIMEOUT);
+	while (time_before(jiffies, timeout) && !done) {
 		status = proc_pending_irqs(dev, &done);
 		if (status)
 			break;
@@ -504,7 +562,7 @@ int ath6kldev_intr_bh_handler(struct ath6kl *ar)
 	return status;
 }
 
-static int ath6kldev_enable_intrs(struct ath6kl_device *dev)
+static int ath6kl_hif_enable_intrs(struct ath6kl_device *dev)
 {
 	struct ath6kl_irq_enable_reg regs;
 	int status;
@@ -552,7 +610,7 @@ static int ath6kldev_enable_intrs(struct ath6kl_device *dev)
 	return status;
 }
 
-int ath6kldev_disable_intrs(struct ath6kl_device *dev)
+int ath6kl_hif_disable_intrs(struct ath6kl_device *dev)
 {
 	struct ath6kl_irq_enable_reg regs;
 
@@ -571,7 +629,7 @@ int ath6kldev_disable_intrs(struct ath6kl_device *dev)
 }
 
 /* enable device interrupts */
-int ath6kldev_unmask_intrs(struct ath6kl_device *dev)
+int ath6kl_hif_unmask_intrs(struct ath6kl_device *dev)
 {
 	int status = 0;
 
@@ -583,29 +641,29 @@ int ath6kldev_unmask_intrs(struct ath6kl_device *dev)
 	 * target "soft" resets. The ATH6KL interrupt enables reset back to an
 	 * "enabled" state when this happens.
 	 */
-	ath6kldev_disable_intrs(dev);
+	ath6kl_hif_disable_intrs(dev);
 
 	/* unmask the host controller interrupts */
 	ath6kl_hif_irq_enable(dev->ar);
-	status = ath6kldev_enable_intrs(dev);
+	status = ath6kl_hif_enable_intrs(dev);
 
 	return status;
 }
 
 /* disable all device interrupts */
-int ath6kldev_mask_intrs(struct ath6kl_device *dev)
+int ath6kl_hif_mask_intrs(struct ath6kl_device *dev)
 {
 	/*
 	 * Mask the interrupt at the HIF layer to avoid any stray interrupt
 	 * taken while we zero out our shadow registers in
-	 * ath6kldev_disable_intrs().
+	 * ath6kl_hif_disable_intrs().
 	 */
 	ath6kl_hif_irq_disable(dev->ar);
 
-	return ath6kldev_disable_intrs(dev);
+	return ath6kl_hif_disable_intrs(dev);
 }
 
-int ath6kldev_setup(struct ath6kl_device *dev)
+int ath6kl_hif_setup(struct ath6kl_device *dev)
 {
 	int status = 0;
 
@@ -621,19 +679,17 @@ int ath6kldev_setup(struct ath6kl_device *dev)
 	/* must be a power of 2 */
 	if ((dev->htc_cnxt->block_sz & (dev->htc_cnxt->block_sz - 1)) != 0) {
 		WARN_ON(1);
+		status = -EINVAL;
 		goto fail_setup;
 	}
 
 	/* assemble mask, used for padding to a block */
 	dev->htc_cnxt->block_mask = dev->htc_cnxt->block_sz - 1;
 
-	ath6kl_dbg(ATH6KL_DBG_TRC, "block size: %d, mbox addr:0x%X\n",
+	ath6kl_dbg(ATH6KL_DBG_HIF, "hif block size %d mbox addr 0x%x\n",
 		   dev->htc_cnxt->block_sz, dev->ar->mbox_info.htc_addr);
 
-	ath6kl_dbg(ATH6KL_DBG_TRC,
-		   "hif interrupt processing is sync only\n");
-
-	status = ath6kldev_disable_intrs(dev);
+	status = ath6kl_hif_disable_intrs(dev);
 
 fail_setup:
 	return status;

drivers/net/wireless/ath/ath6kl/hif.h

@@ -59,6 +59,18 @@
 /* mode to enable special 4-bit interrupt assertion without clock */
 #define SDIO_IRQ_MODE_ASYNC_4BIT_IRQ   (1 << 0)
 
+/* HTC runs over mailbox 0 */
+#define HTC_MAILBOX	0
+
+#define ATH6KL_TARGET_DEBUG_INTR_MASK     0x01
+
+/* FIXME: are these duplicates with MAX_SCATTER_ values in hif.h? */
+#define ATH6KL_SCATTER_ENTRIES_PER_REQ            16
+#define ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER      (16 * 1024)
+#define ATH6KL_SCATTER_REQS                       4
+
+#define ATH6KL_HIF_COMMUNICATION_TIMEOUT	1000
+
 struct bus_request {
 	struct list_head list;
 
@@ -186,6 +198,34 @@ struct hif_scatter_req {
 	struct hif_scatter_item scat_list[1];
 };
 
+struct ath6kl_irq_proc_registers {
+	u8 host_int_status;
+	u8 cpu_int_status;
+	u8 error_int_status;
+	u8 counter_int_status;
+	u8 mbox_frame;
+	u8 rx_lkahd_valid;
+	u8 host_int_status2;
+	u8 gmbox_rx_avail;
+	__le32 rx_lkahd[2];
+	__le32 rx_gmbox_lkahd_alias[2];
+} __packed;
+
+struct ath6kl_irq_enable_reg {
+	u8 int_status_en;
+	u8 cpu_int_status_en;
+	u8 err_int_status_en;
+	u8 cntr_int_status_en;
+} __packed;
+
+struct ath6kl_device {
+	spinlock_t lock;
+	struct ath6kl_irq_proc_registers irq_proc_reg;
+	struct ath6kl_irq_enable_reg irq_en_reg;
+	struct htc_target *htc_cnxt;
+	struct ath6kl *ar;
+};
+
 struct ath6kl_hif_ops {
 	int (*read_write_sync)(struct ath6kl *ar, u32 addr, u8 *buf,
 			       u32 len, u32 request);
@@ -202,7 +242,26 @@ struct ath6kl_hif_ops {
 	int (*scat_req_rw) (struct ath6kl *ar,
 			    struct hif_scatter_req *scat_req);
 	void (*cleanup_scatter)(struct ath6kl *ar);
-	int (*suspend)(struct ath6kl *ar);
+	int (*suspend)(struct ath6kl *ar, struct cfg80211_wowlan *wow);
+	int (*resume)(struct ath6kl *ar);
+	int (*power_on)(struct ath6kl *ar);
+	int (*power_off)(struct ath6kl *ar);
+	void (*stop)(struct ath6kl *ar);
 };
 
+int ath6kl_hif_setup(struct ath6kl_device *dev);
+int ath6kl_hif_unmask_intrs(struct ath6kl_device *dev);
+int ath6kl_hif_mask_intrs(struct ath6kl_device *dev);
+int ath6kl_hif_poll_mboxmsg_rx(struct ath6kl_device *dev,
+			       u32 *lk_ahd, int timeout);
+int ath6kl_hif_rx_control(struct ath6kl_device *dev, bool enable_rx);
+int ath6kl_hif_disable_intrs(struct ath6kl_device *dev);
+
+int ath6kl_hif_rw_comp_handler(void *context, int status);
+int ath6kl_hif_intr_bh_handler(struct ath6kl *ar);
+
+/* Scatter Function and Definitions */
+int ath6kl_hif_submit_scat_req(struct ath6kl_device *dev,
+			       struct hif_scatter_req *scat_req, bool read);
+
 #endif

drivers/net/wireless/ath/ath6kl/htc.h

@@ -393,7 +393,7 @@ struct htc_endpoint_credit_dist {
 	int cred_per_msg;
 
 	/* reserved for HTC use */
-	void *htc_rsvd;
+	struct htc_endpoint *htc_ep;
 
 	/*
 	 * current depth of TX queue , i.e. messages waiting for credits
@@ -414,9 +414,11 @@ enum htc_credit_dist_reason {
 	HTC_CREDIT_DIST_SEEK_CREDITS,
 };
 
-struct htc_credit_state_info {
+struct ath6kl_htc_credit_info {
 	int total_avail_credits;
 	int cur_free_credits;
+
+	/* list of lowest priority endpoints */
 	struct list_head lowestpri_ep_dist;
 };
 
@@ -508,10 +510,13 @@ struct ath6kl_device;
 /* our HTC target state */
 struct htc_target {
 	struct htc_endpoint endpoint[ENDPOINT_MAX];
+
+	/* contains struct htc_endpoint_credit_dist */
 	struct list_head cred_dist_list;
+
 	struct list_head free_ctrl_txbuf;
 	struct list_head free_ctrl_rxbuf;
-	struct htc_credit_state_info *cred_dist_cntxt;
+	struct ath6kl_htc_credit_info *credit_info;
 	int tgt_creds;
 	unsigned int tgt_cred_sz;
 	spinlock_t htc_lock;
@@ -542,7 +547,7 @@ struct htc_target {
 
 void *ath6kl_htc_create(struct ath6kl *ar);
 void ath6kl_htc_set_credit_dist(struct htc_target *target,
-				struct htc_credit_state_info *cred_info,
+				struct ath6kl_htc_credit_info *cred_info,
 				u16 svc_pri_order[], int len);
 int ath6kl_htc_wait_target(struct htc_target *target);
 int ath6kl_htc_start(struct htc_target *target);
@@ -563,7 +568,10 @@ int ath6kl_htc_get_rxbuf_num(struct htc_target *target,
 int ath6kl_htc_add_rxbuf_multiple(struct htc_target *target,
 				  struct list_head *pktq);
 int ath6kl_htc_rxmsg_pending_handler(struct htc_target *target,
-				     u32 msg_look_ahead[], int *n_pkts);
+				     u32 msg_look_ahead, int *n_pkts);
+
+int ath6kl_credit_setup(void *htc_handle,
+			struct ath6kl_htc_credit_info *cred_info);
 
 static inline void set_htc_pkt_info(struct htc_packet *packet, void *context,
 				    u8 *buf, unsigned int len,

drivers/net/wireless/ath/ath6kl/htc_hif.h

-/*
- * Copyright (c) 2007-2011 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 HTC_HIF_H
-#define HTC_HIF_H
-
-#include "htc.h"
-#include "hif.h"
-
-#define ATH6KL_MAILBOXES	4
-
-/* HTC runs over mailbox 0 */
-#define HTC_MAILBOX	0
-
-#define ATH6KL_TARGET_DEBUG_INTR_MASK     0x01
-
-#define OTHER_INTS_ENABLED		(INT_STATUS_ENABLE_ERROR_MASK |	\
-					INT_STATUS_ENABLE_CPU_MASK   |	\
-					INT_STATUS_ENABLE_COUNTER_MASK)
-
-#define ATH6KL_REG_IO_BUFFER_SIZE			32
-#define ATH6KL_MAX_REG_IO_BUFFERS			8
-#define ATH6KL_SCATTER_ENTRIES_PER_REQ            16
-#define ATH6KL_MAX_TRANSFER_SIZE_PER_SCATTER      (16 * 1024)
-#define ATH6KL_SCATTER_REQS                       4
-
-#ifndef A_CACHE_LINE_PAD
-#define A_CACHE_LINE_PAD                        128
-#endif
-#define ATH6KL_MIN_SCATTER_ENTRIES_PER_REQ        2
-#define ATH6KL_MIN_TRANSFER_SIZE_PER_SCATTER      (4 * 1024)
-
-struct ath6kl_irq_proc_registers {
-	u8 host_int_status;
-	u8 cpu_int_status;
-	u8 error_int_status;
-	u8 counter_int_status;
-	u8 mbox_frame;
-	u8 rx_lkahd_valid;
-	u8 host_int_status2;
-	u8 gmbox_rx_avail;
-	__le32 rx_lkahd[2];
-	__le32 rx_gmbox_lkahd_alias[2];
-} __packed;
-
-struct ath6kl_irq_enable_reg {
-	u8 int_status_en;
-	u8 cpu_int_status_en;
-	u8 err_int_status_en;
-	u8 cntr_int_status_en;
-} __packed;
-
-struct ath6kl_device {
-	spinlock_t lock;
-	u8 pad1[A_CACHE_LINE_PAD];
-	struct ath6kl_irq_proc_registers irq_proc_reg;
-	u8 pad2[A_CACHE_LINE_PAD];
-	struct ath6kl_irq_enable_reg irq_en_reg;
-	u8 pad3[A_CACHE_LINE_PAD];
-	struct htc_target *htc_cnxt;
-	struct ath6kl *ar;
-};
-
-int ath6kldev_setup(struct ath6kl_device *dev);
-int ath6kldev_unmask_intrs(struct ath6kl_device *dev);
-int ath6kldev_mask_intrs(struct ath6kl_device *dev);
-int ath6kldev_poll_mboxmsg_rx(struct ath6kl_device *dev,
-			      u32 *lk_ahd, int timeout);
-int ath6kldev_rx_control(struct ath6kl_device *dev, bool enable_rx);
-int ath6kldev_disable_intrs(struct ath6kl_device *dev);
-
-int ath6kldev_rw_comp_handler(void *context, int status);
-int ath6kldev_intr_bh_handler(struct ath6kl *ar);
-
-/* Scatter Function and Definitions */
-int ath6kldev_submit_scat_req(struct ath6kl_device *dev,
-			    struct hif_scatter_req *scat_req, bool read);
-
-#endif /*ATH6KL_H_ */

drivers/net/wireless/ath/ath6kl/target.h

@@ -320,7 +320,10 @@ struct host_interest {
 |   (2)   |   (2)   |   (2)   |   (2)   |   (2)   |   (2)   |   (2)   |   (2)
 |------------------------------------------------------------------------------|
 */
+#define HI_OPTION_FW_MODE_BITS	       0x2
 #define HI_OPTION_FW_MODE_SHIFT        0xC
+
+#define HI_OPTION_FW_SUBMODE_BITS      0x2
 #define HI_OPTION_FW_SUBMODE_SHIFT     0x14
 
 /* Convert a Target virtual address into a Target physical address */

drivers/net/wireless/ath/ath6kl/txrx.c

@@ -77,12 +77,13 @@ static u8 ath6kl_ibss_map_epid(struct sk_buff *skb, struct net_device *dev,
 	return ar->node_map[ep_map].ep_id;
 }
 
-static bool ath6kl_powersave_ap(struct ath6kl *ar, struct sk_buff *skb,
+static bool ath6kl_powersave_ap(struct ath6kl_vif *vif, struct sk_buff *skb,
 				bool *more_data)
 {
 	struct ethhdr *datap = (struct ethhdr *) skb->data;
 	struct ath6kl_sta *conn = NULL;
 	bool ps_queued = false, is_psq_empty = false;
+	struct ath6kl *ar = vif->ar;
 
 	if (is_multicast_ether_addr(datap->h_dest)) {
 		u8 ctr = 0;
@@ -100,7 +101,7 @@ static bool ath6kl_powersave_ap(struct ath6kl *ar, struct sk_buff *skb,
 			 * If this transmit is not because of a Dtim Expiry
 			 * q it.
 			 */
-			if (!test_bit(DTIM_EXPIRED, &ar->flag)) {
+			if (!test_bit(DTIM_EXPIRED, &vif->flags)) {
 				bool is_mcastq_empty = false;
 
 				spin_lock_bh(&ar->mcastpsq_lock);
@@ -116,6 +117,7 @@ static bool ath6kl_powersave_ap(struct ath6kl *ar, struct sk_buff *skb,
 				 */
 				if (is_mcastq_empty)
 					ath6kl_wmi_set_pvb_cmd(ar->wmi,
+							       vif->fw_vif_idx,
 							       MCAST_AID, 1);
 
 				ps_queued = true;
@@ -131,7 +133,7 @@ static bool ath6kl_powersave_ap(struct ath6kl *ar, struct sk_buff *skb,
 			}
 		}
 	} else {
-		conn = ath6kl_find_sta(ar, datap->h_dest);
+		conn = ath6kl_find_sta(vif, datap->h_dest);
 		if (!conn) {
 			dev_kfree_skb(skb);
 
@@ -154,6 +156,7 @@ static bool ath6kl_powersave_ap(struct ath6kl *ar, struct sk_buff *skb,
 				 */
 				if (is_psq_empty)
 					ath6kl_wmi_set_pvb_cmd(ar->wmi,
+							       vif->fw_vif_idx,
 							       conn->aid, 1);
 
 				ps_queued = true;
@@ -235,6 +238,7 @@ int ath6kl_data_tx(struct sk_buff *skb, struct net_device *dev)
 	struct ath6kl *ar = ath6kl_priv(dev);
 	struct ath6kl_cookie *cookie = NULL;
 	enum htc_endpoint_id eid = ENDPOINT_UNUSED;
+	struct ath6kl_vif *vif = netdev_priv(dev);
 	u32 map_no = 0;
 	u16 htc_tag = ATH6KL_DATA_PKT_TAG;
 	u8 ac = 99 ; /* initialize to unmapped ac */
@@ -246,7 +250,7 @@ int ath6kl_data_tx(struct sk_buff *skb, struct net_device *dev)
 		   skb, skb->data, skb->len);
 
 	/* If target is not associated */
-	if (!test_bit(CONNECTED, &ar->flag)) {
+	if (!test_bit(CONNECTED, &vif->flags)) {
 		dev_kfree_skb(skb);
 		return 0;
 	}
@@ -255,15 +259,21 @@ int ath6kl_data_tx(struct sk_buff *skb, struct net_device *dev)
 		goto fail_tx;
 
 	/* AP mode Power saving processing */
-	if (ar->nw_type == AP_NETWORK) {
-		if (ath6kl_powersave_ap(ar, skb, &more_data))
+	if (vif->nw_type == AP_NETWORK) {
+		if (ath6kl_powersave_ap(vif, skb, &more_data))
 			return 0;
 	}
 
 	if (test_bit(WMI_ENABLED, &ar->flag)) {
 		if (skb_headroom(skb) < dev->needed_headroom) {
-			WARN_ON(1);
-			goto fail_tx;
+			struct sk_buff *tmp_skb = skb;
+
+			skb = skb_realloc_headroom(skb, dev->needed_headroom);
+			kfree_skb(tmp_skb);
+			if (skb == NULL) {
+				vif->net_stats.tx_dropped++;
+				return 0;
+			}
 		}
 
 		if (ath6kl_wmi_dix_2_dot3(ar->wmi, skb)) {
@@ -272,18 +282,20 @@ int ath6kl_data_tx(struct sk_buff *skb, struct net_device *dev)
 		}
 
 		if (ath6kl_wmi_data_hdr_add(ar->wmi, skb, DATA_MSGTYPE,
-					    more_data, 0, 0, NULL)) {
+					    more_data, 0, 0, NULL,
+					    vif->fw_vif_idx)) {
 			ath6kl_err("wmi_data_hdr_add failed\n");
 			goto fail_tx;
 		}
 
-		if ((ar->nw_type == ADHOC_NETWORK) &&
-		     ar->ibss_ps_enable && test_bit(CONNECTED, &ar->flag))
+		if ((vif->nw_type == ADHOC_NETWORK) &&
+		     ar->ibss_ps_enable && test_bit(CONNECTED, &vif->flags))
 			chk_adhoc_ps_mapping = true;
 		else {
 			/* get the stream mapping */
-			ret = ath6kl_wmi_implicit_create_pstream(ar->wmi, skb,
-				    0, test_bit(WMM_ENABLED, &ar->flag), &ac);
+			ret = ath6kl_wmi_implicit_create_pstream(ar->wmi,
+				    vif->fw_vif_idx, skb,
+				    0, test_bit(WMM_ENABLED, &vif->flags), &ac);
 			if (ret)
 				goto fail_tx;
 		}
@@ -354,8 +366,8 @@ int ath6kl_data_tx(struct sk_buff *skb, struct net_device *dev)
 fail_tx:
 	dev_kfree_skb(skb);
 
-	ar->net_stats.tx_dropped++;
-	ar->net_stats.tx_aborted_errors++;
+	vif->net_stats.tx_dropped++;
+	vif->net_stats.tx_aborted_errors++;
 
 	return 0;
 }
@@ -426,7 +438,9 @@ enum htc_send_full_action ath6kl_tx_queue_full(struct htc_target *target,
 					       struct htc_packet *packet)
 {
 	struct ath6kl *ar = target->dev->ar;
+	struct ath6kl_vif *vif;
 	enum htc_endpoint_id endpoint = packet->endpoint;
+	enum htc_send_full_action action = HTC_SEND_FULL_KEEP;
 
 	if (endpoint == ar->ctrl_ep) {
 		/*
@@ -439,19 +453,11 @@ enum htc_send_full_action ath6kl_tx_queue_full(struct htc_target *target,
 		set_bit(WMI_CTRL_EP_FULL, &ar->flag);
 		spin_unlock_bh(&ar->lock);
 		ath6kl_err("wmi ctrl ep is full\n");
-		return HTC_SEND_FULL_KEEP;
+		goto stop_adhoc_netq;
 	}
 
 	if (packet->info.tx.tag == ATH6KL_CONTROL_PKT_TAG)
-		return HTC_SEND_FULL_KEEP;
-
-	if (ar->nw_type == ADHOC_NETWORK)
-		/*
-		 * In adhoc mode, we cannot differentiate traffic
-		 * priorities so there is no need to continue, however we
-		 * should stop the network.
-		 */
-		goto stop_net_queues;
+		goto stop_adhoc_netq;
 
 	/*
 	 * The last MAX_HI_COOKIE_NUM "batch" of cookies are reserved for
@@ -459,29 +465,43 @@ enum htc_send_full_action ath6kl_tx_queue_full(struct htc_target *target,
 	 */
 	if (ar->ac_stream_pri_map[ar->ep2ac_map[endpoint]] <
 	    ar->hiac_stream_active_pri &&
-	    ar->cookie_count <= MAX_HI_COOKIE_NUM)
+	    ar->cookie_count <= MAX_HI_COOKIE_NUM) {
 		/*
 		 * Give preference to the highest priority stream by
 		 * dropping the packets which overflowed.
 		 */
-		return HTC_SEND_FULL_DROP;
+		action = HTC_SEND_FULL_DROP;
+		goto stop_adhoc_netq;
+	}
 
-stop_net_queues:
-	spin_lock_bh(&ar->lock);
-	set_bit(NETQ_STOPPED, &ar->flag);
-	spin_unlock_bh(&ar->lock);
-	netif_stop_queue(ar->net_dev);
+stop_adhoc_netq:
+	/* FIXME: Locking */
+	spin_lock_bh(&ar->list_lock);
+	list_for_each_entry(vif, &ar->vif_list, list) {
+		if (vif->nw_type == ADHOC_NETWORK) {
+			spin_unlock_bh(&ar->list_lock);
 
-	return HTC_SEND_FULL_KEEP;
+			spin_lock_bh(&vif->if_lock);
+			set_bit(NETQ_STOPPED, &vif->flags);
+			spin_unlock_bh(&vif->if_lock);
+			netif_stop_queue(vif->ndev);
+
+			return action;
+		}
+	}
+	spin_unlock_bh(&ar->list_lock);
+
+	return action;
 }
 
 /* TODO this needs to be looked at */
-static void ath6kl_tx_clear_node_map(struct ath6kl *ar,
+static void ath6kl_tx_clear_node_map(struct ath6kl_vif *vif,
 				     enum htc_endpoint_id eid, u32 map_no)
 {
+	struct ath6kl *ar = vif->ar;
 	u32 i;
 
-	if (ar->nw_type != ADHOC_NETWORK)
+	if (vif->nw_type != ADHOC_NETWORK)
 		return;
 
 	if (!ar->ibss_ps_enable)
@@ -523,7 +543,9 @@ void ath6kl_tx_complete(void *context, struct list_head *packet_queue)
 	int status;
 	enum htc_endpoint_id eid;
 	bool wake_event = false;
-	bool flushing = false;
+	bool flushing[MAX_NUM_VIF] = {false};
+	u8 if_idx;
+	struct ath6kl_vif *vif;
 
 	skb_queue_head_init(&skb_queue);
 
@@ -569,15 +591,30 @@ void ath6kl_tx_complete(void *context, struct list_head *packet_queue)
 				wake_event = true;
 		}
 
+		if (eid == ar->ctrl_ep) {
+			if_idx = wmi_cmd_hdr_get_if_idx(
+				(struct wmi_cmd_hdr *) skb->data);
+		} else {
+			if_idx = wmi_data_hdr_get_if_idx(
+				(struct wmi_data_hdr *) skb->data);
+		}
+
+		vif = ath6kl_get_vif_by_index(ar, if_idx);
+		if (!vif) {
+			ath6kl_free_cookie(ar, ath6kl_cookie);
+			continue;
+		}
+
 		if (status) {
 			if (status == -ECANCELED)
 				/* a packet was flushed  */
-				flushing = true;
+				flushing[if_idx] = true;
+
+			vif->net_stats.tx_errors++;
 
-			ar->net_stats.tx_errors++;
+			if (status != -ENOSPC && status != -ECANCELED)
+				ath6kl_warn("tx complete error: %d\n", status);
 
-			if (status != -ENOSPC)
-				ath6kl_err("tx error, status: 0x%x\n", status);
 			ath6kl_dbg(ATH6KL_DBG_WLAN_TX,
 				   "%s: skb=0x%p data=0x%p len=0x%x eid=%d %s\n",
 				   __func__, skb, packet->buf, packet->act_len,
@@ -588,27 +625,34 @@ void ath6kl_tx_complete(void *context, struct list_head *packet_queue)
 				   __func__, skb, packet->buf, packet->act_len,
 				   eid, "OK");
 
-			flushing = false;
-			ar->net_stats.tx_packets++;
-			ar->net_stats.tx_bytes += skb->len;
+			flushing[if_idx] = false;
+			vif->net_stats.tx_packets++;
+			vif->net_stats.tx_bytes += skb->len;
 		}
 
-		ath6kl_tx_clear_node_map(ar, eid, map_no);
+		ath6kl_tx_clear_node_map(vif, eid, map_no);
 
 		ath6kl_free_cookie(ar, ath6kl_cookie);
 
-		if (test_bit(NETQ_STOPPED, &ar->flag))
-			clear_bit(NETQ_STOPPED, &ar->flag);
+		if (test_bit(NETQ_STOPPED, &vif->flags))
+			clear_bit(NETQ_STOPPED, &vif->flags);
 	}
 
 	spin_unlock_bh(&ar->lock);
 
 	__skb_queue_purge(&skb_queue);
 
-	if (test_bit(CONNECTED, &ar->flag)) {
-		if (!flushing)
-			netif_wake_queue(ar->net_dev);
+	/* FIXME: Locking */
+	spin_lock_bh(&ar->list_lock);
+	list_for_each_entry(vif, &ar->vif_list, list) {
+		if (test_bit(CONNECTED, &vif->flags) &&
+		    !flushing[vif->fw_vif_idx]) {
+			spin_unlock_bh(&ar->list_lock);
+			netif_wake_queue(vif->ndev);
+			spin_lock_bh(&ar->list_lock);
+		}
 	}
+	spin_unlock_bh(&ar->list_lock);
 
 	if (wake_event)
 		wake_up(&ar->event_wq);
@@ -1041,8 +1085,9 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 	struct ath6kl_sta *conn = NULL;
 	struct sk_buff *skb1 = NULL;
 	struct ethhdr *datap = NULL;
+	struct ath6kl_vif *vif;
 	u16 seq_no, offset;
-	u8 tid;
+	u8 tid, if_idx;
 
 	ath6kl_dbg(ATH6KL_DBG_WLAN_RX,
 		   "%s: ar=0x%p eid=%d, skb=0x%p, data=0x%p, len=0x%x status:%d",
@@ -1050,7 +1095,23 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 		   packet->act_len, status);
 
 	if (status || !(skb->data + HTC_HDR_LENGTH)) {
-		ar->net_stats.rx_errors++;
+		dev_kfree_skb(skb);
+		return;
+	}
+
+	skb_put(skb, packet->act_len + HTC_HDR_LENGTH);
+	skb_pull(skb, HTC_HDR_LENGTH);
+
+	if (ept == ar->ctrl_ep) {
+		if_idx =
+		wmi_cmd_hdr_get_if_idx((struct wmi_cmd_hdr *) skb->data);
+	} else {
+		if_idx =
+		wmi_data_hdr_get_if_idx((struct wmi_data_hdr *) skb->data);
+	}
+
+	vif = ath6kl_get_vif_by_index(ar, if_idx);
+	if (!vif) {
 		dev_kfree_skb(skb);
 		return;
 	}
@@ -1059,28 +1120,28 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 	 * Take lock to protect buffer counts and adaptive power throughput
 	 * state.
 	 */
-	spin_lock_bh(&ar->lock);
+	spin_lock_bh(&vif->if_lock);
 
-	ar->net_stats.rx_packets++;
-	ar->net_stats.rx_bytes += packet->act_len;
+	vif->net_stats.rx_packets++;
+	vif->net_stats.rx_bytes += packet->act_len;
 
-	spin_unlock_bh(&ar->lock);
+	spin_unlock_bh(&vif->if_lock);
 
-	skb_put(skb, packet->act_len + HTC_HDR_LENGTH);
-	skb_pull(skb, HTC_HDR_LENGTH);
 
 	ath6kl_dbg_dump(ATH6KL_DBG_RAW_BYTES, __func__, "rx ",
 			skb->data, skb->len);
 
-	skb->dev = ar->net_dev;
+	skb->dev = vif->ndev;
 
 	if (!test_bit(WMI_ENABLED, &ar->flag)) {
 		if (EPPING_ALIGNMENT_PAD > 0)
 			skb_pull(skb, EPPING_ALIGNMENT_PAD);
-		ath6kl_deliver_frames_to_nw_stack(ar->net_dev, skb);
+		ath6kl_deliver_frames_to_nw_stack(vif->ndev, skb);
 		return;
 	}
 
+	ath6kl_check_wow_status(ar);
+
 	if (ept == ar->ctrl_ep) {
 		ath6kl_wmi_control_rx(ar->wmi, skb);
 		return;
@@ -1096,18 +1157,18 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 	 * that do not have LLC hdr. They are 16 bytes in size.
 	 * Allow these frames in the AP mode.
 	 */
-	if (ar->nw_type != AP_NETWORK &&
+	if (vif->nw_type != AP_NETWORK &&
 	    ((packet->act_len < min_hdr_len) ||
 	     (packet->act_len > WMI_MAX_AMSDU_RX_DATA_FRAME_LENGTH))) {
 		ath6kl_info("frame len is too short or too long\n");
-		ar->net_stats.rx_errors++;
-		ar->net_stats.rx_length_errors++;
+		vif->net_stats.rx_errors++;
+		vif->net_stats.rx_length_errors++;
 		dev_kfree_skb(skb);
 		return;
 	}
 
 	/* Get the Power save state of the STA */
-	if (ar->nw_type == AP_NETWORK) {
+	if (vif->nw_type == AP_NETWORK) {
 		meta_type = wmi_data_hdr_get_meta(dhdr);
 
 		ps_state = !!((dhdr->info >> WMI_DATA_HDR_PS_SHIFT) &
@@ -1129,7 +1190,7 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 		}
 
 		datap = (struct ethhdr *) (skb->data + offset);
-		conn = ath6kl_find_sta(ar, datap->h_source);
+		conn = ath6kl_find_sta(vif, datap->h_source);
 
 		if (!conn) {
 			dev_kfree_skb(skb);
@@ -1160,12 +1221,13 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 				while ((skbuff = skb_dequeue(&conn->psq))
 				       != NULL) {
 					spin_unlock_bh(&conn->psq_lock);
-					ath6kl_data_tx(skbuff, ar->net_dev);
+					ath6kl_data_tx(skbuff, vif->ndev);
 					spin_lock_bh(&conn->psq_lock);
 				}
 				spin_unlock_bh(&conn->psq_lock);
 				/* Clear the PVB for this STA */
-				ath6kl_wmi_set_pvb_cmd(ar->wmi, conn->aid, 0);
+				ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
+						       conn->aid, 0);
 			}
 		}
 
@@ -1215,12 +1277,12 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 		return;
 	}
 
-	if (!(ar->net_dev->flags & IFF_UP)) {
+	if (!(vif->ndev->flags & IFF_UP)) {
 		dev_kfree_skb(skb);
 		return;
 	}
 
-	if (ar->nw_type == AP_NETWORK) {
+	if (vif->nw_type == AP_NETWORK) {
 		datap = (struct ethhdr *) skb->data;
 		if (is_multicast_ether_addr(datap->h_dest))
 			/*
@@ -1235,8 +1297,7 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 			 * frame to it on the air else send the
 			 * frame up the stack.
 			 */
-			struct ath6kl_sta *conn = NULL;
-			conn = ath6kl_find_sta(ar, datap->h_dest);
+			conn = ath6kl_find_sta(vif, datap->h_dest);
 
 			if (conn && ar->intra_bss) {
 				skb1 = skb;
@@ -1247,18 +1308,23 @@ void ath6kl_rx(struct htc_target *target, struct htc_packet *packet)
 			}
 		}
 		if (skb1)
-			ath6kl_data_tx(skb1, ar->net_dev);
+			ath6kl_data_tx(skb1, vif->ndev);
+
+		if (skb == NULL) {
+			/* nothing to deliver up the stack */
+			return;
+		}
 	}
 
 	datap = (struct ethhdr *) skb->data;
 
 	if (is_unicast_ether_addr(datap->h_dest) &&
-	    aggr_process_recv_frm(ar->aggr_cntxt, tid, seq_no,
+	    aggr_process_recv_frm(vif->aggr_cntxt, tid, seq_no,
 				  is_amsdu, skb))
 		/* aggregation code will handle the skb */
 		return;
 
-	ath6kl_deliver_frames_to_nw_stack(ar->net_dev, skb);
+	ath6kl_deliver_frames_to_nw_stack(vif->ndev, skb);
 }
 
 static void aggr_timeout(unsigned long arg)
@@ -1336,9 +1402,10 @@ static void aggr_delete_tid_state(struct aggr_info *p_aggr, u8 tid)
 	memset(stats, 0, sizeof(struct rxtid_stats));
 }
 
-void aggr_recv_addba_req_evt(struct ath6kl *ar, u8 tid, u16 seq_no, u8 win_sz)
+void aggr_recv_addba_req_evt(struct ath6kl_vif *vif, u8 tid, u16 seq_no,
+			     u8 win_sz)
 {
-	struct aggr_info *p_aggr = ar->aggr_cntxt;
+	struct aggr_info *p_aggr = vif->aggr_cntxt;
 	struct rxtid *rxtid;
 	struct rxtid_stats *stats;
 	u16 hold_q_size;
@@ -1405,9 +1472,9 @@ struct aggr_info *aggr_init(struct net_device *dev)
 	return p_aggr;
 }
 
-void aggr_recv_delba_req_evt(struct ath6kl *ar, u8 tid)
+void aggr_recv_delba_req_evt(struct ath6kl_vif *vif, u8 tid)
 {
-	struct aggr_info *p_aggr = ar->aggr_cntxt;
+	struct aggr_info *p_aggr = vif->aggr_cntxt;
 	struct rxtid *rxtid;
 
 	if (!p_aggr)