forked from Minki/linux
f4c88991f5
Use a queue to handle WMI events and schedule a tasklet to process the events. This fixes the race between the WMI event ISR and the SWBA tasklet when the arrival of WMI events in quick succession could overwrite the SWBA data before the tasklet from a previous iteration could have been scheduled. Also, drain the WMI queue properly. Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
568 lines
14 KiB
C
568 lines
14 KiB
C
/*
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* Copyright (c) 2010 Atheros Communications Inc.
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*
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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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*
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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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*/
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#ifndef HTC_H
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#define HTC_H
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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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#include "common.h"
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#include "htc_hst.h"
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#include "hif_usb.h"
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#include "wmi.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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enum htc_phymode {
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HTC_MODE_AUTO = 0,
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HTC_MODE_11A = 1,
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HTC_MODE_11B = 2,
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HTC_MODE_11G = 3,
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HTC_MODE_FH = 4,
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HTC_MODE_TURBO_A = 5,
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HTC_MODE_TURBO_G = 6,
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HTC_MODE_11NA = 7,
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HTC_MODE_11NG = 8
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};
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enum htc_opmode {
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HTC_M_STA = 1,
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HTC_M_IBSS = 0,
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HTC_M_AHDEMO = 3,
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HTC_M_HOSTAP = 6,
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HTC_M_MONITOR = 8,
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HTC_M_WDS = 2
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};
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#define ATH9K_HTC_HDRSPACE sizeof(struct htc_frame_hdr)
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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_TX_CTSONLY 0x1
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#define ATH9K_HTC_TX_RTSCTS 0x2
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#define ATH9K_HTC_TX_USE_MIN_RATE 0x100
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struct tx_frame_hdr {
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u8 data_type;
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u8 node_idx;
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u8 vif_idx;
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u8 tidno;
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__be32 flags; /* ATH9K_HTC_TX_* */
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u8 key_type;
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u8 keyix;
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u8 reserved[26];
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} __packed;
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struct tx_mgmt_hdr {
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u8 node_idx;
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u8 vif_idx;
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u8 tidno;
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u8 flags;
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u8 key_type;
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u8 keyix;
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u16 reserved;
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} __packed;
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struct tx_beacon_header {
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u8 vif_index;
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u8 len_changed;
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u16 rev;
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} __packed;
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struct ath9k_htc_target_hw {
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u32 flags;
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u32 flags_ext;
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u32 ampdu_limit;
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u8 ampdu_subframes;
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u8 tx_chainmask;
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u8 tx_chainmask_legacy;
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u8 rtscts_ratecode;
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u8 protmode;
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} __packed;
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struct ath9k_htc_cap_target {
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u32 flags;
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u32 flags_ext;
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u32 ampdu_limit;
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u8 ampdu_subframes;
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u8 tx_chainmask;
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u8 tx_chainmask_legacy;
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u8 rtscts_ratecode;
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u8 protmode;
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} __packed;
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struct ath9k_htc_target_vif {
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u8 index;
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u8 des_bssid[ETH_ALEN];
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__be32 opmode;
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u8 myaddr[ETH_ALEN];
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u8 bssid[ETH_ALEN];
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u32 flags;
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u32 flags_ext;
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u16 ps_sta;
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__be16 rtsthreshold;
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u8 ath_cap;
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u8 node;
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s8 mcast_rate;
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} __packed;
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#define ATH_HTC_STA_AUTH 0x0001
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#define ATH_HTC_STA_QOS 0x0002
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#define ATH_HTC_STA_ERP 0x0004
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#define ATH_HTC_STA_HT 0x0008
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/* FIXME: UAPSD variables */
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struct ath9k_htc_target_sta {
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u16 associd;
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u16 txpower;
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u32 ucastkey;
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u8 macaddr[ETH_ALEN];
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u8 bssid[ETH_ALEN];
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u8 sta_index;
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u8 vif_index;
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u8 vif_sta;
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__be16 flags; /* ATH_HTC_STA_* */
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u16 htcap;
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u8 valid;
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u16 capinfo;
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struct ath9k_htc_target_hw *hw;
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struct ath9k_htc_target_vif *vif;
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u16 txseqmgmt;
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u8 is_vif_sta;
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u16 maxampdu;
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u16 iv16;
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u32 iv32;
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} __packed;
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struct ath9k_htc_target_aggr {
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u8 sta_index;
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u8 tidno;
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u8 aggr_enable;
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u8 padding;
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} __packed;
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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_nrates;
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u8 rs_rates[ATH_HTC_RATE_MAX];
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};
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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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} __packed;
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struct ath9k_htc_target_rate {
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u8 sta_index;
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u8 isnew;
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__be32 capflags;
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struct ath9k_htc_rate rates;
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};
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struct ath9k_htc_target_stats {
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__be32 tx_shortretry;
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__be32 tx_longretry;
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__be32 tx_xretries;
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__be32 ht_txunaggr_xretry;
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__be32 ht_tx_xretries;
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} __packed;
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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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switch (_type) { \
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case NL80211_IFTYPE_STATION: \
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_priv->num_sta_vif++; \
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break; \
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case NL80211_IFTYPE_ADHOC: \
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_priv->num_ibss_vif++; \
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break; \
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case NL80211_IFTYPE_AP: \
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_priv->num_ap_vif++; \
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break; \
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default: \
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break; \
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} \
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} while (0)
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#define DEC_VIF(_priv, _type) do { \
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switch (_type) { \
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case NL80211_IFTYPE_STATION: \
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_priv->num_sta_vif--; \
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break; \
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case NL80211_IFTYPE_ADHOC: \
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_priv->num_ibss_vif--; \
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break; \
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case NL80211_IFTYPE_AP: \
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_priv->num_ap_vif--; \
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break; \
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default: \
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break; \
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} \
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} while (0)
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struct ath9k_htc_vif {
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u8 index;
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u16 seq_no;
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bool beacon_configured;
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int bslot;
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__le64 tsfadjust;
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};
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struct ath9k_vif_iter_data {
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const u8 *hw_macaddr;
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u8 mask[ETH_ALEN];
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};
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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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AGGR_STOP = 0,
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AGGR_PROGRESS,
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AGGR_START,
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AGGR_OPERATIONAL
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};
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struct ath9k_htc_sta {
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u8 index;
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enum tid_aggr_state tid_state[ATH9K_HTC_MAX_TID];
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};
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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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bool in_process;
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struct sk_buff *skb;
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struct ath_htc_rx_status rxstatus;
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struct list_head list;
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};
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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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};
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struct ath9k_htc_tx_ctl {
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u8 type; /* ATH9K_HTC_* */
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};
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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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struct ath_tx_stats {
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u32 buf_queued;
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u32 buf_completed;
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u32 skb_queued;
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u32 skb_completed;
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u32 skb_dropped;
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u32 cab_queued;
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u32 queue_stats[WME_NUM_AC];
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};
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struct ath_rx_stats {
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u32 skb_allocated;
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u32 skb_completed;
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u32 skb_dropped;
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};
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struct ath9k_debug {
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struct dentry *debugfs_phy;
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struct dentry *debugfs_tgt_stats;
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struct dentry *debugfs_xmit;
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struct dentry *debugfs_recv;
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struct ath_tx_stats tx_stats;
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struct ath_rx_stats rx_stats;
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u32 txrate;
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};
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#else
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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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#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 ATH_LED_ON_DURATION_IDLE 350 /* in msecs */
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#define ATH_LED_OFF_DURATION_IDLE 250 /* in msecs */
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enum ath_led_type {
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ATH_LED_RADIO,
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ATH_LED_ASSOC,
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ATH_LED_TX,
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ATH_LED_RX
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};
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struct ath_led {
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struct ath9k_htc_priv *priv;
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struct led_classdev led_cdev;
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enum ath_led_type led_type;
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struct delayed_work brightness_work;
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char name[32];
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bool registered;
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int brightness;
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};
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#define BSTUCK_THRESHOLD 10
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/*
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* Adjust these when the max. no of beaconing interfaces is
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* increased.
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*/
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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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u16 beacon_interval;
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u16 dtim_period;
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u16 bmiss_timeout;
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u32 bmiss_cnt;
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};
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struct ath_btcoex {
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u32 bt_priority_cnt;
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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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u32 btcoex_no_stomp;
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u32 btcoex_period;
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u32 btscan_no_stomp;
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};
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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_LED_ASSOCIATED BIT(2)
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#define OP_LED_ON BIT(3)
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#define OP_ENABLE_BEACON BIT(4)
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#define OP_LED_DEINIT BIT(5)
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#define OP_BT_PRIORITY_DETECTED BIT(6)
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#define OP_BT_SCAN BIT(7)
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#define OP_ANI_RUNNING BIT(8)
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#define OP_TSF_RESET BIT(9)
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struct ath9k_htc_priv {
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struct device *dev;
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struct ieee80211_hw *hw;
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struct ath_hw *ah;
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struct htc_target *htc;
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struct wmi *wmi;
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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_slot;
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u8 mon_vif_idx;
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u8 sta_slot;
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u8 vif_sta_pos[ATH9K_HTC_MAX_VIF];
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u8 num_ibss_vif;
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u8 num_sta_vif;
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u8 num_ap_vif;
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u16 op_flags;
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u16 curtxpow;
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u16 txpowlimit;
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u16 nvifs;
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u16 nstations;
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bool rearm_ani;
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bool reconfig_beacon;
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struct ath9k_hw_cal_data caldata;
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spinlock_t beacon_lock;
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bool tx_queues_stop;
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spinlock_t tx_lock;
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struct htc_beacon_config cur_beacon_conf;
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unsigned int rxfilter;
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struct tasklet_struct swba_tasklet;
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struct tasklet_struct rx_tasklet;
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struct ieee80211_supported_band sbands[IEEE80211_NUM_BANDS];
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struct ath9k_htc_rx rx;
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struct tasklet_struct tx_tasklet;
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struct sk_buff_head tx_queue;
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struct delayed_work ani_work;
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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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bool ps_enabled;
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bool ps_idle;
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struct ath_led radio_led;
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struct ath_led assoc_led;
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struct ath_led tx_led;
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struct ath_led rx_led;
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struct delayed_work ath9k_led_blink_work;
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int led_on_duration;
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int led_off_duration;
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int led_on_cnt;
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int led_off_cnt;
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int beaconq;
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int cabq;
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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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#endif
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struct mutex mutex;
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};
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static inline void ath_read_cachesize(struct ath_common *common, int *csz)
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{
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common->bus_ops->read_cachesize(common, csz);
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}
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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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bool txok);
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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_station_work(struct work_struct *work);
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void ath9k_htc_aggr_work(struct work_struct *work);
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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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void ath9k_tx_tasklet(unsigned long data);
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int ath9k_htc_tx_start(struct ath9k_htc_priv *priv,
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struct sk_buff *skb, 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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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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void ath9k_led_stop_brightness(struct ath9k_htc_priv *priv);
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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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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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#ifdef CONFIG_PM
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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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#endif
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#ifdef CONFIG_ATH9K_HTC_DEBUGFS
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int ath9k_htc_debug_create_root(void);
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void ath9k_htc_debug_remove_root(void);
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int ath9k_htc_init_debug(struct ath_hw *ah);
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void ath9k_htc_exit_debug(struct ath_hw *ah);
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#else
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static inline int ath9k_htc_debug_create_root(void) { return 0; };
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static inline void ath9k_htc_debug_remove_root(void) {};
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static inline int ath9k_htc_init_debug(struct ath_hw *ah) { return 0; };
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static inline void ath9k_htc_exit_debug(struct ath_hw *ah) {};
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#endif /* CONFIG_ATH9K_HTC_DEBUGFS */
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#endif /* HTC_H */
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