diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/htc_drv_main.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/htc_drv_main.c | 1902 |
1 files changed, 1902 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c new file mode 100644 index 000000000..16a7bae62 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c @@ -0,0 +1,1902 @@ +/* + * Copyright (c) 2010-2011 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. + */ + +#include "htc.h" + +/*************/ +/* Utilities */ +/*************/ + +/* HACK Alert: Use 11NG for 2.4, use 11NA for 5 */ +static enum htc_phymode ath9k_htc_get_curmode(struct ath9k_htc_priv *priv, + struct ath9k_channel *ichan) +{ + if (IS_CHAN_5GHZ(ichan)) + return HTC_MODE_11NA; + + return HTC_MODE_11NG; +} + +bool ath9k_htc_setpower(struct ath9k_htc_priv *priv, + enum ath9k_power_mode mode) +{ + bool ret; + + mutex_lock(&priv->htc_pm_lock); + ret = ath9k_hw_setpower(priv->ah, mode); + mutex_unlock(&priv->htc_pm_lock); + + return ret; +} + +void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv) +{ + mutex_lock(&priv->htc_pm_lock); + if (++priv->ps_usecount != 1) + goto unlock; + ath9k_hw_setpower(priv->ah, ATH9K_PM_AWAKE); + +unlock: + mutex_unlock(&priv->htc_pm_lock); +} + +void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv) +{ + bool reset; + + mutex_lock(&priv->htc_pm_lock); + if (--priv->ps_usecount != 0) + goto unlock; + + if (priv->ps_idle) { + ath9k_hw_setrxabort(priv->ah, true); + ath9k_hw_stopdmarecv(priv->ah, &reset); + ath9k_hw_setpower(priv->ah, ATH9K_PM_FULL_SLEEP); + } else if (priv->ps_enabled) { + ath9k_hw_setpower(priv->ah, ATH9K_PM_NETWORK_SLEEP); + } + +unlock: + mutex_unlock(&priv->htc_pm_lock); +} + +void ath9k_ps_work(struct work_struct *work) +{ + struct ath9k_htc_priv *priv = + container_of(work, struct ath9k_htc_priv, + ps_work); + ath9k_htc_setpower(priv, ATH9K_PM_AWAKE); + + /* The chip wakes up after receiving the first beacon + while network sleep is enabled. For the driver to + be in sync with the hw, set the chip to awake and + only then set it to sleep. + */ + ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP); +} + +static void ath9k_htc_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath9k_htc_priv *priv = data; + struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; + + if ((vif->type == NL80211_IFTYPE_AP || + vif->type == NL80211_IFTYPE_MESH_POINT) && + bss_conf->enable_beacon) { + priv->reconfig_beacon = true; + priv->rearm_ani = true; + } + + if (bss_conf->assoc) { + priv->rearm_ani = true; + priv->reconfig_beacon = true; + } +} + +static void ath9k_htc_vif_reconfig(struct ath9k_htc_priv *priv) +{ + priv->rearm_ani = false; + priv->reconfig_beacon = false; + + ieee80211_iterate_active_interfaces_atomic( + priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath9k_htc_vif_iter, priv); + if (priv->rearm_ani) + ath9k_htc_start_ani(priv); + + if (priv->reconfig_beacon) { + ath9k_htc_ps_wakeup(priv); + ath9k_htc_beacon_reconfig(priv); + ath9k_htc_ps_restore(priv); + } +} + +static void ath9k_htc_bssid_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath9k_vif_iter_data *iter_data = data; + int i; + + if (iter_data->hw_macaddr != NULL) { + for (i = 0; i < ETH_ALEN; i++) + iter_data->mask[i] &= ~(iter_data->hw_macaddr[i] ^ mac[i]); + } else { + iter_data->hw_macaddr = mac; + } +} + +static void ath9k_htc_set_mac_bssid_mask(struct ath9k_htc_priv *priv, + struct ieee80211_vif *vif) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_vif_iter_data iter_data; + + /* + * Pick the MAC address of the first interface as the new hardware + * MAC address. The hardware will use it together with the BSSID mask + * when matching addresses. + */ + iter_data.hw_macaddr = NULL; + eth_broadcast_addr(iter_data.mask); + + if (vif) + ath9k_htc_bssid_iter(&iter_data, vif->addr, vif); + + /* Get list of all active MAC addresses */ + ieee80211_iterate_active_interfaces_atomic( + priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath9k_htc_bssid_iter, &iter_data); + + memcpy(common->bssidmask, iter_data.mask, ETH_ALEN); + + if (iter_data.hw_macaddr) + memcpy(common->macaddr, iter_data.hw_macaddr, ETH_ALEN); + + ath_hw_setbssidmask(common); +} + +static void ath9k_htc_set_opmode(struct ath9k_htc_priv *priv) +{ + if (priv->num_ibss_vif) + priv->ah->opmode = NL80211_IFTYPE_ADHOC; + else if (priv->num_ap_vif) + priv->ah->opmode = NL80211_IFTYPE_AP; + else if (priv->num_mbss_vif) + priv->ah->opmode = NL80211_IFTYPE_MESH_POINT; + else + priv->ah->opmode = NL80211_IFTYPE_STATION; + + ath9k_hw_setopmode(priv->ah); +} + +void ath9k_htc_reset(struct ath9k_htc_priv *priv) +{ + struct ath_hw *ah = priv->ah; + struct ath_common *common = ath9k_hw_common(ah); + struct ieee80211_channel *channel = priv->hw->conf.chandef.chan; + struct ath9k_hw_cal_data *caldata = NULL; + enum htc_phymode mode; + __be16 htc_mode; + u8 cmd_rsp; + int ret; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + + ath9k_htc_stop_ani(priv); + ieee80211_stop_queues(priv->hw); + + del_timer_sync(&priv->tx.cleanup_timer); + ath9k_htc_tx_drain(priv); + + WMI_CMD(WMI_DISABLE_INTR_CMDID); + WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID); + WMI_CMD(WMI_STOP_RECV_CMDID); + + ath9k_wmi_event_drain(priv); + + caldata = &priv->caldata; + ret = ath9k_hw_reset(ah, ah->curchan, caldata, false); + if (ret) { + ath_err(common, + "Unable to reset device (%u Mhz) reset status %d\n", + channel->center_freq, ret); + } + + ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit, + &priv->curtxpow); + + WMI_CMD(WMI_START_RECV_CMDID); + ath9k_host_rx_init(priv); + + mode = ath9k_htc_get_curmode(priv, ah->curchan); + htc_mode = cpu_to_be16(mode); + WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode); + + WMI_CMD(WMI_ENABLE_INTR_CMDID); + htc_start(priv->htc); + ath9k_htc_vif_reconfig(priv); + ieee80211_wake_queues(priv->hw); + + mod_timer(&priv->tx.cleanup_timer, + jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL)); + + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); +} + +static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv, + struct ieee80211_hw *hw, + struct ath9k_channel *hchan) +{ + struct ath_hw *ah = priv->ah; + struct ath_common *common = ath9k_hw_common(ah); + struct ieee80211_conf *conf = &common->hw->conf; + bool fastcc; + struct ieee80211_channel *channel = hw->conf.chandef.chan; + struct ath9k_hw_cal_data *caldata; + enum htc_phymode mode; + __be16 htc_mode; + u8 cmd_rsp; + int ret; + + if (test_bit(ATH_OP_INVALID, &common->op_flags)) + return -EIO; + + fastcc = !!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL); + + ath9k_htc_ps_wakeup(priv); + + ath9k_htc_stop_ani(priv); + del_timer_sync(&priv->tx.cleanup_timer); + ath9k_htc_tx_drain(priv); + + WMI_CMD(WMI_DISABLE_INTR_CMDID); + WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID); + WMI_CMD(WMI_STOP_RECV_CMDID); + + ath9k_wmi_event_drain(priv); + + ath_dbg(common, CONFIG, + "(%u MHz) -> (%u MHz), HT: %d, HT40: %d fastcc: %d\n", + priv->ah->curchan->channel, + channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf), + fastcc); + caldata = fastcc ? NULL : &priv->caldata; + ret = ath9k_hw_reset(ah, hchan, caldata, fastcc); + if (ret) { + ath_err(common, + "Unable to reset channel (%u Mhz) reset status %d\n", + channel->center_freq, ret); + goto err; + } + + ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit, + &priv->curtxpow); + + WMI_CMD(WMI_START_RECV_CMDID); + if (ret) + goto err; + + ath9k_host_rx_init(priv); + + mode = ath9k_htc_get_curmode(priv, hchan); + htc_mode = cpu_to_be16(mode); + WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode); + if (ret) + goto err; + + WMI_CMD(WMI_ENABLE_INTR_CMDID); + if (ret) + goto err; + + htc_start(priv->htc); + + if (!test_bit(ATH_OP_SCANNING, &common->op_flags) && + !(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)) + ath9k_htc_vif_reconfig(priv); + + mod_timer(&priv->tx.cleanup_timer, + jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL)); + + /* perform spectral scan if requested. */ + if (test_bit(ATH_OP_SCANNING, &common->op_flags) && + priv->spec_priv.spectral_mode == SPECTRAL_CHANSCAN) + ath9k_cmn_spectral_scan_trigger(common, &priv->spec_priv); +err: + ath9k_htc_ps_restore(priv); + return ret; +} + +/* + * Monitor mode handling is a tad complicated because the firmware requires + * an interface to be created exclusively, while mac80211 doesn't associate + * an interface with the mode. + * + * So, for now, only one monitor interface can be configured. + */ +static void __ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_vif hvif; + int ret = 0; + u8 cmd_rsp; + + memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif)); + memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN); + hvif.index = priv->mon_vif_idx; + WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif); + if (ret) { + ath_err(common, "Unable to remove monitor interface at idx: %d\n", + priv->mon_vif_idx); + } + + priv->nvifs--; + priv->vif_slot &= ~(1 << priv->mon_vif_idx); +} + +static int ath9k_htc_add_monitor_interface(struct ath9k_htc_priv *priv) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_vif hvif; + struct ath9k_htc_target_sta tsta; + int ret = 0, sta_idx; + u8 cmd_rsp; + + if ((priv->nvifs >= ATH9K_HTC_MAX_VIF) || + (priv->nstations >= ATH9K_HTC_MAX_STA)) { + ret = -ENOBUFS; + goto err_vif; + } + + sta_idx = ffz(priv->sta_slot); + if ((sta_idx < 0) || (sta_idx > ATH9K_HTC_MAX_STA)) { + ret = -ENOBUFS; + goto err_vif; + } + + /* + * Add an interface. + */ + memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif)); + memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN); + + hvif.opmode = HTC_M_MONITOR; + hvif.index = ffz(priv->vif_slot); + + WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif); + if (ret) + goto err_vif; + + /* + * Assign the monitor interface index as a special case here. + * This is needed when the interface is brought down. + */ + priv->mon_vif_idx = hvif.index; + priv->vif_slot |= (1 << hvif.index); + + /* + * Set the hardware mode to monitor only if there are no + * other interfaces. + */ + if (!priv->nvifs) + priv->ah->opmode = NL80211_IFTYPE_MONITOR; + + priv->nvifs++; + + /* + * Associate a station with the interface for packet injection. + */ + memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta)); + + memcpy(&tsta.macaddr, common->macaddr, ETH_ALEN); + + tsta.is_vif_sta = 1; + tsta.sta_index = sta_idx; + tsta.vif_index = hvif.index; + tsta.maxampdu = cpu_to_be16(0xffff); + + WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta); + if (ret) { + ath_err(common, "Unable to add station entry for monitor mode\n"); + goto err_sta; + } + + priv->sta_slot |= (1 << sta_idx); + priv->nstations++; + priv->vif_sta_pos[priv->mon_vif_idx] = sta_idx; + priv->ah->is_monitoring = true; + + ath_dbg(common, CONFIG, + "Attached a monitor interface at idx: %d, sta idx: %d\n", + priv->mon_vif_idx, sta_idx); + + return 0; + +err_sta: + /* + * Remove the interface from the target. + */ + __ath9k_htc_remove_monitor_interface(priv); +err_vif: + ath_dbg(common, FATAL, "Unable to attach a monitor interface\n"); + + return ret; +} + +static int ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + int ret = 0; + u8 cmd_rsp, sta_idx; + + __ath9k_htc_remove_monitor_interface(priv); + + sta_idx = priv->vif_sta_pos[priv->mon_vif_idx]; + + WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx); + if (ret) { + ath_err(common, "Unable to remove station entry for monitor mode\n"); + return ret; + } + + priv->sta_slot &= ~(1 << sta_idx); + priv->nstations--; + priv->ah->is_monitoring = false; + + ath_dbg(common, CONFIG, + "Removed a monitor interface at idx: %d, sta idx: %d\n", + priv->mon_vif_idx, sta_idx); + + return 0; +} + +static int ath9k_htc_add_station(struct ath9k_htc_priv *priv, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_sta tsta; + struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv; + struct ath9k_htc_sta *ista; + int ret, sta_idx; + u8 cmd_rsp; + u16 maxampdu; + + if (priv->nstations >= ATH9K_HTC_MAX_STA) + return -ENOBUFS; + + sta_idx = ffz(priv->sta_slot); + if ((sta_idx < 0) || (sta_idx > ATH9K_HTC_MAX_STA)) + return -ENOBUFS; + + memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta)); + + if (sta) { + ista = (struct ath9k_htc_sta *) sta->drv_priv; + memcpy(&tsta.macaddr, sta->addr, ETH_ALEN); + memcpy(&tsta.bssid, common->curbssid, ETH_ALEN); + ista->index = sta_idx; + tsta.is_vif_sta = 0; + maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + + sta->ht_cap.ampdu_factor); + tsta.maxampdu = cpu_to_be16(maxampdu); + } else { + memcpy(&tsta.macaddr, vif->addr, ETH_ALEN); + tsta.is_vif_sta = 1; + tsta.maxampdu = cpu_to_be16(0xffff); + } + + tsta.sta_index = sta_idx; + tsta.vif_index = avp->index; + + WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta); + if (ret) { + if (sta) + ath_err(common, + "Unable to add station entry for: %pM\n", + sta->addr); + return ret; + } + + if (sta) { + ath_dbg(common, CONFIG, + "Added a station entry for: %pM (idx: %d)\n", + sta->addr, tsta.sta_index); + } else { + ath_dbg(common, CONFIG, + "Added a station entry for VIF %d (idx: %d)\n", + avp->index, tsta.sta_index); + } + + priv->sta_slot |= (1 << sta_idx); + priv->nstations++; + if (!sta) + priv->vif_sta_pos[avp->index] = sta_idx; + + return 0; +} + +static int ath9k_htc_remove_station(struct ath9k_htc_priv *priv, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv; + struct ath9k_htc_sta *ista; + int ret; + u8 cmd_rsp, sta_idx; + + if (sta) { + ista = (struct ath9k_htc_sta *) sta->drv_priv; + sta_idx = ista->index; + } else { + sta_idx = priv->vif_sta_pos[avp->index]; + } + + WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx); + if (ret) { + if (sta) + ath_err(common, + "Unable to remove station entry for: %pM\n", + sta->addr); + return ret; + } + + if (sta) { + ath_dbg(common, CONFIG, + "Removed a station entry for: %pM (idx: %d)\n", + sta->addr, sta_idx); + } else { + ath_dbg(common, CONFIG, + "Removed a station entry for VIF %d (idx: %d)\n", + avp->index, sta_idx); + } + + priv->sta_slot &= ~(1 << sta_idx); + priv->nstations--; + + return 0; +} + +int ath9k_htc_update_cap_target(struct ath9k_htc_priv *priv, + u8 enable_coex) +{ + struct ath9k_htc_cap_target tcap; + int ret; + u8 cmd_rsp; + + memset(&tcap, 0, sizeof(struct ath9k_htc_cap_target)); + + tcap.ampdu_limit = cpu_to_be32(0xffff); + tcap.ampdu_subframes = 0xff; + tcap.enable_coex = enable_coex; + tcap.tx_chainmask = priv->ah->caps.tx_chainmask; + + WMI_CMD_BUF(WMI_TARGET_IC_UPDATE_CMDID, &tcap); + + return ret; +} + +static void ath9k_htc_setup_rate(struct ath9k_htc_priv *priv, + struct ieee80211_sta *sta, + struct ath9k_htc_target_rate *trate) +{ + struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv; + struct ieee80211_supported_band *sband; + u32 caps = 0; + int i, j; + + sband = priv->hw->wiphy->bands[priv->hw->conf.chandef.chan->band]; + + for (i = 0, j = 0; i < sband->n_bitrates; i++) { + if (sta->supp_rates[sband->band] & BIT(i)) { + trate->rates.legacy_rates.rs_rates[j] + = (sband->bitrates[i].bitrate * 2) / 10; + j++; + } + } + trate->rates.legacy_rates.rs_nrates = j; + + if (sta->ht_cap.ht_supported) { + for (i = 0, j = 0; i < 77; i++) { + if (sta->ht_cap.mcs.rx_mask[i/8] & (1<<(i%8))) + trate->rates.ht_rates.rs_rates[j++] = i; + if (j == ATH_HTC_RATE_MAX) + break; + } + trate->rates.ht_rates.rs_nrates = j; + + caps = WLAN_RC_HT_FLAG; + if (sta->ht_cap.cap & IEEE80211_HT_CAP_RX_STBC) + caps |= ATH_RC_TX_STBC_FLAG; + if (sta->ht_cap.mcs.rx_mask[1]) + caps |= WLAN_RC_DS_FLAG; + if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) && + (conf_is_ht40(&priv->hw->conf))) + caps |= WLAN_RC_40_FLAG; + if (conf_is_ht40(&priv->hw->conf) && + (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)) + caps |= WLAN_RC_SGI_FLAG; + else if (conf_is_ht20(&priv->hw->conf) && + (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20)) + caps |= WLAN_RC_SGI_FLAG; + } + + trate->sta_index = ista->index; + trate->isnew = 1; + trate->capflags = cpu_to_be32(caps); +} + +static int ath9k_htc_send_rate_cmd(struct ath9k_htc_priv *priv, + struct ath9k_htc_target_rate *trate) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + int ret; + u8 cmd_rsp; + + WMI_CMD_BUF(WMI_RC_RATE_UPDATE_CMDID, trate); + if (ret) { + ath_err(common, + "Unable to initialize Rate information on target\n"); + } + + return ret; +} + +static void ath9k_htc_init_rate(struct ath9k_htc_priv *priv, + struct ieee80211_sta *sta) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_rate trate; + int ret; + + memset(&trate, 0, sizeof(struct ath9k_htc_target_rate)); + ath9k_htc_setup_rate(priv, sta, &trate); + ret = ath9k_htc_send_rate_cmd(priv, &trate); + if (!ret) + ath_dbg(common, CONFIG, + "Updated target sta: %pM, rate caps: 0x%X\n", + sta->addr, be32_to_cpu(trate.capflags)); +} + +static void ath9k_htc_update_rate(struct ath9k_htc_priv *priv, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_rate trate; + struct ieee80211_sta *sta; + int ret; + + memset(&trate, 0, sizeof(struct ath9k_htc_target_rate)); + + rcu_read_lock(); + sta = ieee80211_find_sta(vif, bss_conf->bssid); + if (!sta) { + rcu_read_unlock(); + return; + } + ath9k_htc_setup_rate(priv, sta, &trate); + rcu_read_unlock(); + + ret = ath9k_htc_send_rate_cmd(priv, &trate); + if (!ret) + ath_dbg(common, CONFIG, + "Updated target sta: %pM, rate caps: 0x%X\n", + bss_conf->bssid, be32_to_cpu(trate.capflags)); +} + +static int ath9k_htc_tx_aggr_oper(struct ath9k_htc_priv *priv, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + enum ieee80211_ampdu_mlme_action action, + u16 tid) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_aggr aggr; + struct ath9k_htc_sta *ista; + int ret = 0; + u8 cmd_rsp; + + if (tid >= ATH9K_HTC_MAX_TID) + return -EINVAL; + + memset(&aggr, 0, sizeof(struct ath9k_htc_target_aggr)); + ista = (struct ath9k_htc_sta *) sta->drv_priv; + + aggr.sta_index = ista->index; + aggr.tidno = tid & 0xf; + aggr.aggr_enable = (action == IEEE80211_AMPDU_TX_START) ? true : false; + + WMI_CMD_BUF(WMI_TX_AGGR_ENABLE_CMDID, &aggr); + if (ret) + ath_dbg(common, CONFIG, + "Unable to %s TX aggregation for (%pM, %d)\n", + (aggr.aggr_enable) ? "start" : "stop", sta->addr, tid); + else + ath_dbg(common, CONFIG, + "%s TX aggregation for (%pM, %d)\n", + (aggr.aggr_enable) ? "Starting" : "Stopping", + sta->addr, tid); + + spin_lock_bh(&priv->tx.tx_lock); + ista->tid_state[tid] = (aggr.aggr_enable && !ret) ? AGGR_START : AGGR_STOP; + spin_unlock_bh(&priv->tx.tx_lock); + + return ret; +} + +/*******/ +/* ANI */ +/*******/ + +void ath9k_htc_start_ani(struct ath9k_htc_priv *priv) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + unsigned long timestamp = jiffies_to_msecs(jiffies); + + common->ani.longcal_timer = timestamp; + common->ani.shortcal_timer = timestamp; + common->ani.checkani_timer = timestamp; + + set_bit(ATH_OP_ANI_RUN, &common->op_flags); + + ieee80211_queue_delayed_work(common->hw, &priv->ani_work, + msecs_to_jiffies(ATH_ANI_POLLINTERVAL)); +} + +void ath9k_htc_stop_ani(struct ath9k_htc_priv *priv) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + cancel_delayed_work_sync(&priv->ani_work); + clear_bit(ATH_OP_ANI_RUN, &common->op_flags); +} + +void ath9k_htc_ani_work(struct work_struct *work) +{ + struct ath9k_htc_priv *priv = + container_of(work, struct ath9k_htc_priv, ani_work.work); + struct ath_hw *ah = priv->ah; + struct ath_common *common = ath9k_hw_common(ah); + bool longcal = false; + bool shortcal = false; + bool aniflag = false; + unsigned int timestamp = jiffies_to_msecs(jiffies); + u32 cal_interval, short_cal_interval; + + short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ? + ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL; + + /* Only calibrate if awake */ + if (ah->power_mode != ATH9K_PM_AWAKE) + goto set_timer; + + /* Long calibration runs independently of short calibration. */ + if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) { + longcal = true; + ath_dbg(common, ANI, "longcal @%lu\n", jiffies); + common->ani.longcal_timer = timestamp; + } + + /* + * Short calibration applies only while caldone + * is false or -ETIMEDOUT + */ + if (common->ani.caldone <= 0) { + if ((timestamp - common->ani.shortcal_timer) >= + short_cal_interval) { + shortcal = true; + ath_dbg(common, ANI, "shortcal @%lu\n", jiffies); + common->ani.shortcal_timer = timestamp; + common->ani.resetcal_timer = timestamp; + } + } else { + if ((timestamp - common->ani.resetcal_timer) >= + ATH_RESTART_CALINTERVAL) { + common->ani.caldone = ath9k_hw_reset_calvalid(ah); + if (common->ani.caldone) + common->ani.resetcal_timer = timestamp; + } + } + + /* Verify whether we must check ANI */ + if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) { + aniflag = true; + common->ani.checkani_timer = timestamp; + } + + /* Skip all processing if there's nothing to do. */ + if (longcal || shortcal || aniflag) { + + ath9k_htc_ps_wakeup(priv); + + /* Call ANI routine if necessary */ + if (aniflag) + ath9k_hw_ani_monitor(ah, ah->curchan); + + /* Perform calibration if necessary */ + if (longcal || shortcal) + common->ani.caldone = + ath9k_hw_calibrate(ah, ah->curchan, + ah->rxchainmask, longcal) > 0; + + ath9k_htc_ps_restore(priv); + } + +set_timer: + /* + * Set timer interval based on previous results. + * The interval must be the shortest necessary to satisfy ANI, + * short calibration and long calibration. + */ + cal_interval = ATH_LONG_CALINTERVAL; + cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL); + /* + * Short calibration applies only while caldone + * is false or -ETIMEDOUT + */ + if (common->ani.caldone <= 0) + cal_interval = min(cal_interval, (u32)short_cal_interval); + + ieee80211_queue_delayed_work(common->hw, &priv->ani_work, + msecs_to_jiffies(cal_interval)); +} + +/**********************/ +/* mac80211 Callbacks */ +/**********************/ + +static void ath9k_htc_tx(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr; + struct ath9k_htc_priv *priv = hw->priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + int padpos, padsize, ret, slot; + + hdr = (struct ieee80211_hdr *) skb->data; + + /* Add the padding after the header if this is not already done */ + padpos = ieee80211_hdrlen(hdr->frame_control); + padsize = padpos & 3; + if (padsize && skb->len > padpos) { + if (skb_headroom(skb) < padsize) { + ath_dbg(common, XMIT, "No room for padding\n"); + goto fail_tx; + } + skb_push(skb, padsize); + memmove(skb->data, skb->data + padsize, padpos); + } + + slot = ath9k_htc_tx_get_slot(priv); + if (slot < 0) { + ath_dbg(common, XMIT, "No free TX slot\n"); + goto fail_tx; + } + + ret = ath9k_htc_tx_start(priv, control->sta, skb, slot, false); + if (ret != 0) { + ath_dbg(common, XMIT, "Tx failed\n"); + goto clear_slot; + } + + ath9k_htc_check_stop_queues(priv); + + return; + +clear_slot: + ath9k_htc_tx_clear_slot(priv, slot); +fail_tx: + dev_kfree_skb_any(skb); +} + +static int ath9k_htc_start(struct ieee80211_hw *hw) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_hw *ah = priv->ah; + struct ath_common *common = ath9k_hw_common(ah); + struct ieee80211_channel *curchan = hw->conf.chandef.chan; + struct ath9k_channel *init_channel; + int ret = 0; + enum htc_phymode mode; + __be16 htc_mode; + u8 cmd_rsp; + + mutex_lock(&priv->mutex); + + ath_dbg(common, CONFIG, + "Starting driver with initial channel: %d MHz\n", + curchan->center_freq); + + /* Ensure that HW is awake before flushing RX */ + ath9k_htc_setpower(priv, ATH9K_PM_AWAKE); + WMI_CMD(WMI_FLUSH_RECV_CMDID); + + /* setup initial channel */ + init_channel = ath9k_cmn_get_channel(hw, ah, &hw->conf.chandef); + + ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false); + if (ret) { + ath_err(common, + "Unable to reset hardware; reset status %d (freq %u MHz)\n", + ret, curchan->center_freq); + mutex_unlock(&priv->mutex); + return ret; + } + + ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit, + &priv->curtxpow); + + mode = ath9k_htc_get_curmode(priv, init_channel); + htc_mode = cpu_to_be16(mode); + WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode); + WMI_CMD(WMI_ATH_INIT_CMDID); + WMI_CMD(WMI_START_RECV_CMDID); + + ath9k_host_rx_init(priv); + + ret = ath9k_htc_update_cap_target(priv, 0); + if (ret) + ath_dbg(common, CONFIG, + "Failed to update capability in target\n"); + + clear_bit(ATH_OP_INVALID, &common->op_flags); + htc_start(priv->htc); + + spin_lock_bh(&priv->tx.tx_lock); + priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP; + spin_unlock_bh(&priv->tx.tx_lock); + + ieee80211_wake_queues(hw); + + mod_timer(&priv->tx.cleanup_timer, + jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL)); + + ath9k_htc_start_btcoex(priv); + + mutex_unlock(&priv->mutex); + + return ret; +} + +static void ath9k_htc_stop(struct ieee80211_hw *hw) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_hw *ah = priv->ah; + struct ath_common *common = ath9k_hw_common(ah); + int ret __attribute__ ((unused)); + u8 cmd_rsp; + + mutex_lock(&priv->mutex); + + if (test_bit(ATH_OP_INVALID, &common->op_flags)) { + ath_dbg(common, ANY, "Device not present\n"); + mutex_unlock(&priv->mutex); + return; + } + + ath9k_htc_ps_wakeup(priv); + + WMI_CMD(WMI_DISABLE_INTR_CMDID); + WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID); + WMI_CMD(WMI_STOP_RECV_CMDID); + + tasklet_kill(&priv->rx_tasklet); + + del_timer_sync(&priv->tx.cleanup_timer); + ath9k_htc_tx_drain(priv); + ath9k_wmi_event_drain(priv); + + mutex_unlock(&priv->mutex); + + /* Cancel all the running timers/work .. */ + cancel_work_sync(&priv->fatal_work); + cancel_work_sync(&priv->ps_work); + +#ifdef CONFIG_MAC80211_LEDS + cancel_work_sync(&priv->led_work); +#endif + ath9k_htc_stop_ani(priv); + + mutex_lock(&priv->mutex); + + ath9k_htc_stop_btcoex(priv); + + /* Remove a monitor interface if it's present. */ + if (priv->ah->is_monitoring) + ath9k_htc_remove_monitor_interface(priv); + + ath9k_hw_phy_disable(ah); + ath9k_hw_disable(ah); + ath9k_htc_ps_restore(priv); + ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP); + + set_bit(ATH_OP_INVALID, &common->op_flags); + + ath_dbg(common, CONFIG, "Driver halt\n"); + mutex_unlock(&priv->mutex); +} + +static int ath9k_htc_add_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath9k_htc_vif *avp = (void *)vif->drv_priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_vif hvif; + int ret = 0; + u8 cmd_rsp; + + mutex_lock(&priv->mutex); + + ath9k_htc_ps_wakeup(priv); + memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif)); + memcpy(&hvif.myaddr, vif->addr, ETH_ALEN); + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + hvif.opmode = HTC_M_STA; + break; + case NL80211_IFTYPE_ADHOC: + hvif.opmode = HTC_M_IBSS; + break; + case NL80211_IFTYPE_AP: + hvif.opmode = HTC_M_HOSTAP; + break; + case NL80211_IFTYPE_MESH_POINT: + hvif.opmode = HTC_M_WDS; /* close enough */ + break; + default: + ath_err(common, + "Interface type %d not yet supported\n", vif->type); + ret = -EOPNOTSUPP; + goto out; + } + + /* Index starts from zero on the target */ + avp->index = hvif.index = ffz(priv->vif_slot); + hvif.rtsthreshold = cpu_to_be16(2304); + WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif); + if (ret) + goto out; + + /* + * We need a node in target to tx mgmt frames + * before association. + */ + ret = ath9k_htc_add_station(priv, vif, NULL); + if (ret) { + WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif); + goto out; + } + + ath9k_htc_set_mac_bssid_mask(priv, vif); + + priv->vif_slot |= (1 << avp->index); + priv->nvifs++; + + INC_VIF(priv, vif->type); + + if ((vif->type == NL80211_IFTYPE_AP) || + (vif->type == NL80211_IFTYPE_MESH_POINT) || + (vif->type == NL80211_IFTYPE_ADHOC)) + ath9k_htc_assign_bslot(priv, vif); + + ath9k_htc_set_opmode(priv); + + if ((priv->ah->opmode == NL80211_IFTYPE_AP) && + !test_bit(ATH_OP_ANI_RUN, &common->op_flags)) { + ath9k_hw_set_tsfadjust(priv->ah, true); + ath9k_htc_start_ani(priv); + } + + ath_dbg(common, CONFIG, "Attach a VIF of type: %d at idx: %d\n", + vif->type, avp->index); + +out: + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); + + return ret; +} + +static void ath9k_htc_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_vif *avp = (void *)vif->drv_priv; + struct ath9k_htc_target_vif hvif; + int ret = 0; + u8 cmd_rsp; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + + memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif)); + memcpy(&hvif.myaddr, vif->addr, ETH_ALEN); + hvif.index = avp->index; + WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif); + if (ret) { + ath_err(common, "Unable to remove interface at idx: %d\n", + avp->index); + } + priv->nvifs--; + priv->vif_slot &= ~(1 << avp->index); + + if (priv->csa_vif == vif) + priv->csa_vif = NULL; + + ath9k_htc_remove_station(priv, vif, NULL); + + DEC_VIF(priv, vif->type); + + if ((vif->type == NL80211_IFTYPE_AP) || + vif->type == NL80211_IFTYPE_MESH_POINT || + (vif->type == NL80211_IFTYPE_ADHOC)) + ath9k_htc_remove_bslot(priv, vif); + + ath9k_htc_set_opmode(priv); + + ath9k_htc_set_mac_bssid_mask(priv, vif); + + /* + * Stop ANI only if there are no associated station interfaces. + */ + if ((vif->type == NL80211_IFTYPE_AP) && (priv->num_ap_vif == 0)) { + priv->rearm_ani = false; + ieee80211_iterate_active_interfaces_atomic( + priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath9k_htc_vif_iter, priv); + if (!priv->rearm_ani) + ath9k_htc_stop_ani(priv); + } + + ath_dbg(common, CONFIG, "Detach Interface at idx: %d\n", avp->index); + + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); +} + +static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ieee80211_conf *conf = &hw->conf; + bool chip_reset = false; + int ret = 0; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + + if (changed & IEEE80211_CONF_CHANGE_IDLE) { + mutex_lock(&priv->htc_pm_lock); + + priv->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE); + if (!priv->ps_idle) + chip_reset = true; + + mutex_unlock(&priv->htc_pm_lock); + } + + /* + * Monitor interface should be added before + * IEEE80211_CONF_CHANGE_CHANNEL is handled. + */ + if (changed & IEEE80211_CONF_CHANGE_MONITOR) { + if ((conf->flags & IEEE80211_CONF_MONITOR) && + !priv->ah->is_monitoring) + ath9k_htc_add_monitor_interface(priv); + else if (priv->ah->is_monitoring) + ath9k_htc_remove_monitor_interface(priv); + } + + if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || chip_reset) { + struct ieee80211_channel *curchan = hw->conf.chandef.chan; + int pos = curchan->hw_value; + + ath_dbg(common, CONFIG, "Set channel: %d MHz\n", + curchan->center_freq); + + ath9k_cmn_get_channel(hw, priv->ah, &hw->conf.chandef); + if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) { + ath_err(common, "Unable to set channel\n"); + ret = -EINVAL; + goto out; + } + + } + + if (changed & IEEE80211_CONF_CHANGE_PS) { + if (conf->flags & IEEE80211_CONF_PS) { + ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP); + priv->ps_enabled = true; + } else { + priv->ps_enabled = false; + cancel_work_sync(&priv->ps_work); + ath9k_htc_setpower(priv, ATH9K_PM_AWAKE); + } + } + + if (changed & IEEE80211_CONF_CHANGE_POWER) { + priv->txpowlimit = 2 * conf->power_level; + ath9k_cmn_update_txpow(priv->ah, priv->curtxpow, + priv->txpowlimit, &priv->curtxpow); + } + +out: + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); + return ret; +} + +#define SUPPORTED_FILTERS \ + (FIF_ALLMULTI | \ + FIF_CONTROL | \ + FIF_PSPOLL | \ + FIF_OTHER_BSS | \ + FIF_BCN_PRBRESP_PROMISC | \ + FIF_PROBE_REQ | \ + FIF_FCSFAIL) + +static void ath9k_htc_configure_filter(struct ieee80211_hw *hw, + unsigned int changed_flags, + unsigned int *total_flags, + u64 multicast) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + u32 rfilt; + + mutex_lock(&priv->mutex); + changed_flags &= SUPPORTED_FILTERS; + *total_flags &= SUPPORTED_FILTERS; + + if (test_bit(ATH_OP_INVALID, &common->op_flags)) { + ath_dbg(ath9k_hw_common(priv->ah), ANY, + "Unable to configure filter on invalid state\n"); + mutex_unlock(&priv->mutex); + return; + } + ath9k_htc_ps_wakeup(priv); + + priv->rxfilter = *total_flags; + rfilt = ath9k_htc_calcrxfilter(priv); + ath9k_hw_setrxfilter(priv->ah, rfilt); + + ath_dbg(ath9k_hw_common(priv->ah), CONFIG, "Set HW RX filter: 0x%x\n", + rfilt); + + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); +} + +static void ath9k_htc_sta_rc_update_work(struct work_struct *work) +{ + struct ath9k_htc_sta *ista = + container_of(work, struct ath9k_htc_sta, rc_update_work); + struct ieee80211_sta *sta = + container_of((void *)ista, struct ieee80211_sta, drv_priv); + struct ath9k_htc_priv *priv = ista->htc_priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_rate trate; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + + memset(&trate, 0, sizeof(struct ath9k_htc_target_rate)); + ath9k_htc_setup_rate(priv, sta, &trate); + if (!ath9k_htc_send_rate_cmd(priv, &trate)) + ath_dbg(common, CONFIG, + "Supported rates for sta: %pM updated, rate caps: 0x%X\n", + sta->addr, be32_to_cpu(trate.capflags)); + else + ath_dbg(common, CONFIG, + "Unable to update supported rates for sta: %pM\n", + sta->addr); + + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); +} + +static int ath9k_htc_sta_add(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv; + int ret; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + ret = ath9k_htc_add_station(priv, vif, sta); + if (!ret) { + INIT_WORK(&ista->rc_update_work, ath9k_htc_sta_rc_update_work); + ista->htc_priv = priv; + ath9k_htc_init_rate(priv, sta); + } + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); + + return ret; +} + +static int ath9k_htc_sta_remove(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv; + int ret; + + cancel_work_sync(&ista->rc_update_work); + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + htc_sta_drain(priv->htc, ista->index); + ret = ath9k_htc_remove_station(priv, vif, sta); + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); + + return ret; +} + +static void ath9k_htc_sta_rc_update(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, u32 changed) +{ + struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv; + + if (!(changed & IEEE80211_RC_SUPP_RATES_CHANGED)) + return; + + schedule_work(&ista->rc_update_work); +} + +static int ath9k_htc_conf_tx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u16 queue, + const struct ieee80211_tx_queue_params *params) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_tx_queue_info qi; + int ret = 0, qnum; + + if (queue >= IEEE80211_NUM_ACS) + return 0; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + + memset(&qi, 0, sizeof(struct ath9k_tx_queue_info)); + + qi.tqi_aifs = params->aifs; + qi.tqi_cwmin = params->cw_min; + qi.tqi_cwmax = params->cw_max; + qi.tqi_burstTime = params->txop * 32; + + qnum = get_hw_qnum(queue, priv->hwq_map); + + ath_dbg(common, CONFIG, + "Configure tx [queue/hwq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", + queue, qnum, params->aifs, params->cw_min, + params->cw_max, params->txop); + + ret = ath_htc_txq_update(priv, qnum, &qi); + if (ret) { + ath_err(common, "TXQ Update failed\n"); + goto out; + } + + if ((priv->ah->opmode == NL80211_IFTYPE_ADHOC) && + (qnum == priv->hwq_map[IEEE80211_AC_BE])) + ath9k_htc_beaconq_config(priv); +out: + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); + + return ret; +} + +static int ath9k_htc_set_key(struct ieee80211_hw *hw, + enum set_key_cmd cmd, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + int ret = 0; + + if (htc_modparam_nohwcrypt) + return -ENOSPC; + + if ((vif->type == NL80211_IFTYPE_ADHOC || + vif->type == NL80211_IFTYPE_MESH_POINT) && + (key->cipher == WLAN_CIPHER_SUITE_TKIP || + key->cipher == WLAN_CIPHER_SUITE_CCMP) && + !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { + /* + * For now, disable hw crypto for the RSN IBSS group keys. This + * could be optimized in the future to use a modified key cache + * design to support per-STA RX GTK, but until that gets + * implemented, use of software crypto for group addressed + * frames is a acceptable to allow RSN IBSS to be used. + */ + return -EOPNOTSUPP; + } + + mutex_lock(&priv->mutex); + ath_dbg(common, CONFIG, "Set HW Key\n"); + ath9k_htc_ps_wakeup(priv); + + switch (cmd) { + case SET_KEY: + ret = ath_key_config(common, vif, sta, key); + if (ret >= 0) { + key->hw_key_idx = ret; + /* push IV and Michael MIC generation to stack */ + key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; + if (key->cipher == WLAN_CIPHER_SUITE_TKIP) + key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; + if (priv->ah->sw_mgmt_crypto_tx && + key->cipher == WLAN_CIPHER_SUITE_CCMP) + key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; + ret = 0; + } + break; + case DISABLE_KEY: + ath_key_delete(common, key->hw_key_idx); + break; + default: + ret = -EINVAL; + } + + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); + + return ret; +} + +static void ath9k_htc_set_bssid(struct ath9k_htc_priv *priv) +{ + struct ath_common *common = ath9k_hw_common(priv->ah); + + ath9k_hw_write_associd(priv->ah); + ath_dbg(common, CONFIG, "BSSID: %pM aid: 0x%x\n", + common->curbssid, common->curaid); +} + +static void ath9k_htc_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath9k_htc_priv *priv = data; + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; + + if ((vif->type == NL80211_IFTYPE_STATION) && bss_conf->assoc) { + common->curaid = bss_conf->aid; + common->last_rssi = ATH_RSSI_DUMMY_MARKER; + memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); + set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); + } +} + +static void ath9k_htc_choose_set_bssid(struct ath9k_htc_priv *priv) +{ + if (priv->num_sta_assoc_vif == 1) { + ieee80211_iterate_active_interfaces_atomic( + priv->hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath9k_htc_bss_iter, priv); + ath9k_htc_set_bssid(priv); + } +} + +static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf, + u32 changed) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_hw *ah = priv->ah; + struct ath_common *common = ath9k_hw_common(ah); + int slottime; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + + if (changed & BSS_CHANGED_ASSOC) { + ath_dbg(common, CONFIG, "BSS Changed ASSOC %d\n", + bss_conf->assoc); + + bss_conf->assoc ? + priv->num_sta_assoc_vif++ : priv->num_sta_assoc_vif--; + + if (!bss_conf->assoc) + clear_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); + + if (priv->ah->opmode == NL80211_IFTYPE_STATION) { + ath9k_htc_choose_set_bssid(priv); + if (bss_conf->assoc && (priv->num_sta_assoc_vif == 1)) + ath9k_htc_start_ani(priv); + else if (priv->num_sta_assoc_vif == 0) + ath9k_htc_stop_ani(priv); + } + } + + if (changed & BSS_CHANGED_IBSS) { + if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) { + common->curaid = bss_conf->aid; + memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); + ath9k_htc_set_bssid(priv); + } + } + + if ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon) { + ath_dbg(common, CONFIG, "Beacon enabled for BSS: %pM\n", + bss_conf->bssid); + ath9k_htc_set_tsfadjust(priv, vif); + priv->cur_beacon_conf.enable_beacon = 1; + ath9k_htc_beacon_config(priv, vif); + } + + if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) { + /* + * Disable SWBA interrupt only if there are no + * concurrent AP/mesh or IBSS interfaces. + */ + if ((priv->num_ap_vif + priv->num_mbss_vif <= 1) || + priv->num_ibss_vif) { + ath_dbg(common, CONFIG, + "Beacon disabled for BSS: %pM\n", + bss_conf->bssid); + priv->cur_beacon_conf.enable_beacon = 0; + ath9k_htc_beacon_config(priv, vif); + } + } + + if (changed & BSS_CHANGED_BEACON_INT) { + /* + * Reset the HW TSF for the first AP or mesh interface. + */ + if (priv->nvifs == 1 && + ((priv->ah->opmode == NL80211_IFTYPE_AP && + vif->type == NL80211_IFTYPE_AP && + priv->num_ap_vif == 1) || + (priv->ah->opmode == NL80211_IFTYPE_MESH_POINT && + vif->type == NL80211_IFTYPE_MESH_POINT && + priv->num_mbss_vif == 1))) { + set_bit(OP_TSF_RESET, &priv->op_flags); + } + ath_dbg(common, CONFIG, + "Beacon interval changed for BSS: %pM\n", + bss_conf->bssid); + ath9k_htc_beacon_config(priv, vif); + } + + if (changed & BSS_CHANGED_ERP_SLOT) { + if (bss_conf->use_short_slot) + slottime = 9; + else + slottime = 20; + if (vif->type == NL80211_IFTYPE_AP) { + /* + * Defer update, so that connected stations can adjust + * their settings at the same time. + * See beacon.c for more details + */ + priv->beacon.slottime = slottime; + priv->beacon.updateslot = UPDATE; + } else { + ah->slottime = slottime; + ath9k_hw_init_global_settings(ah); + } + } + + if (changed & BSS_CHANGED_HT) + ath9k_htc_update_rate(priv, vif, bss_conf); + + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); +} + +static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath9k_htc_priv *priv = hw->priv; + u64 tsf; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + tsf = ath9k_hw_gettsf64(priv->ah); + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); + + return tsf; +} + +static void ath9k_htc_set_tsf(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u64 tsf) +{ + struct ath9k_htc_priv *priv = hw->priv; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + ath9k_hw_settsf64(priv->ah, tsf); + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); +} + +static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath9k_htc_priv *priv = hw->priv; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + ath9k_hw_reset_tsf(priv->ah); + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); +} + +static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_ampdu_params *params) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath9k_htc_sta *ista; + int ret = 0; + struct ieee80211_sta *sta = params->sta; + enum ieee80211_ampdu_mlme_action action = params->action; + u16 tid = params->tid; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + + switch (action) { + case IEEE80211_AMPDU_RX_START: + break; + case IEEE80211_AMPDU_RX_STOP: + break; + case IEEE80211_AMPDU_TX_START: + ret = ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid); + if (!ret) + ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); + break; + case IEEE80211_AMPDU_TX_STOP_CONT: + case IEEE80211_AMPDU_TX_STOP_FLUSH: + case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: + ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid); + ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); + break; + case IEEE80211_AMPDU_TX_OPERATIONAL: + if (tid >= ATH9K_HTC_MAX_TID) { + ret = -EINVAL; + break; + } + ista = (struct ath9k_htc_sta *) sta->drv_priv; + spin_lock_bh(&priv->tx.tx_lock); + ista->tid_state[tid] = AGGR_OPERATIONAL; + spin_unlock_bh(&priv->tx.tx_lock); + break; + default: + ath_err(ath9k_hw_common(priv->ah), "Unknown AMPDU action\n"); + } + + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); + + return ret; +} + +static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + const u8 *mac_addr) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + + mutex_lock(&priv->mutex); + spin_lock_bh(&priv->beacon_lock); + set_bit(ATH_OP_SCANNING, &common->op_flags); + spin_unlock_bh(&priv->beacon_lock); + cancel_work_sync(&priv->ps_work); + ath9k_htc_stop_ani(priv); + mutex_unlock(&priv->mutex); +} + +static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + + mutex_lock(&priv->mutex); + spin_lock_bh(&priv->beacon_lock); + clear_bit(ATH_OP_SCANNING, &common->op_flags); + spin_unlock_bh(&priv->beacon_lock); + ath9k_htc_ps_wakeup(priv); + ath9k_htc_vif_reconfig(priv); + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); +} + +static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value) +{ + return 0; +} + +static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw, + s16 coverage_class) +{ + struct ath9k_htc_priv *priv = hw->priv; + + mutex_lock(&priv->mutex); + ath9k_htc_ps_wakeup(priv); + priv->ah->coverage_class = coverage_class; + ath9k_hw_init_global_settings(priv->ah); + ath9k_htc_ps_restore(priv); + mutex_unlock(&priv->mutex); +} + +/* + * Currently, this is used only for selecting the minimum rate + * for management frames, rate selection for data frames remain + * unaffected. + */ +static int ath9k_htc_set_bitrate_mask(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + const struct cfg80211_bitrate_mask *mask) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_common *common = ath9k_hw_common(priv->ah); + struct ath9k_htc_target_rate_mask tmask; + struct ath9k_htc_vif *avp = (void *)vif->drv_priv; + int ret = 0; + u8 cmd_rsp; + + memset(&tmask, 0, sizeof(struct ath9k_htc_target_rate_mask)); + + tmask.vif_index = avp->index; + tmask.band = NL80211_BAND_2GHZ; + tmask.mask = cpu_to_be32(mask->control[NL80211_BAND_2GHZ].legacy); + + WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask); + if (ret) { + ath_err(common, + "Unable to set 2G rate mask for " + "interface at idx: %d\n", avp->index); + goto out; + } + + tmask.band = NL80211_BAND_5GHZ; + tmask.mask = cpu_to_be32(mask->control[NL80211_BAND_5GHZ].legacy); + + WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask); + if (ret) { + ath_err(common, + "Unable to set 5G rate mask for " + "interface at idx: %d\n", avp->index); + goto out; + } + + ath_dbg(common, CONFIG, "Set bitrate masks: 0x%x, 0x%x\n", + mask->control[NL80211_BAND_2GHZ].legacy, + mask->control[NL80211_BAND_5GHZ].legacy); +out: + return ret; +} + + +static int ath9k_htc_get_stats(struct ieee80211_hw *hw, + struct ieee80211_low_level_stats *stats) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct ath_hw *ah = priv->ah; + struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats; + + stats->dot11ACKFailureCount = mib_stats->ackrcv_bad; + stats->dot11RTSFailureCount = mib_stats->rts_bad; + stats->dot11FCSErrorCount = mib_stats->fcs_bad; + stats->dot11RTSSuccessCount = mib_stats->rts_good; + + return 0; +} + +struct base_eep_header *ath9k_htc_get_eeprom_base(struct ath9k_htc_priv *priv) +{ + struct base_eep_header *pBase = NULL; + /* + * This can be done since all the 3 EEPROM families have the + * same base header upto a certain point, and we are interested in + * the data only upto that point. + */ + + if (AR_SREV_9271(priv->ah)) + pBase = (struct base_eep_header *) + &priv->ah->eeprom.map4k.baseEepHeader; + else if (priv->ah->hw_version.usbdev == AR9280_USB) + pBase = (struct base_eep_header *) + &priv->ah->eeprom.def.baseEepHeader; + else if (priv->ah->hw_version.usbdev == AR9287_USB) + pBase = (struct base_eep_header *) + &priv->ah->eeprom.map9287.baseEepHeader; + return pBase; +} + + +static int ath9k_htc_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, + u32 *rx_ant) +{ + struct ath9k_htc_priv *priv = hw->priv; + struct base_eep_header *pBase = ath9k_htc_get_eeprom_base(priv); + if (pBase) { + *tx_ant = pBase->txMask; + *rx_ant = pBase->rxMask; + } else { + *tx_ant = 0; + *rx_ant = 0; + } + return 0; +} + +static void ath9k_htc_channel_switch_beacon(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct cfg80211_chan_def *chandef) +{ + struct ath9k_htc_priv *priv = hw->priv; + + /* mac80211 does not support CSA in multi-if cases (yet) */ + if (WARN_ON(priv->csa_vif)) + return; + + priv->csa_vif = vif; +} + +struct ieee80211_ops ath9k_htc_ops = { + .tx = ath9k_htc_tx, + .start = ath9k_htc_start, + .stop = ath9k_htc_stop, + .add_interface = ath9k_htc_add_interface, + .remove_interface = ath9k_htc_remove_interface, + .config = ath9k_htc_config, + .configure_filter = ath9k_htc_configure_filter, + .sta_add = ath9k_htc_sta_add, + .sta_remove = ath9k_htc_sta_remove, + .conf_tx = ath9k_htc_conf_tx, + .sta_rc_update = ath9k_htc_sta_rc_update, + .bss_info_changed = ath9k_htc_bss_info_changed, + .set_key = ath9k_htc_set_key, + .get_tsf = ath9k_htc_get_tsf, + .set_tsf = ath9k_htc_set_tsf, + .reset_tsf = ath9k_htc_reset_tsf, + .ampdu_action = ath9k_htc_ampdu_action, + .sw_scan_start = ath9k_htc_sw_scan_start, + .sw_scan_complete = ath9k_htc_sw_scan_complete, + .set_rts_threshold = ath9k_htc_set_rts_threshold, + .rfkill_poll = ath9k_htc_rfkill_poll_state, + .set_coverage_class = ath9k_htc_set_coverage_class, + .set_bitrate_mask = ath9k_htc_set_bitrate_mask, + .get_stats = ath9k_htc_get_stats, + .get_antenna = ath9k_htc_get_antenna, + .channel_switch_beacon = ath9k_htc_channel_switch_beacon, + +#ifdef CONFIG_ATH9K_HTC_DEBUGFS + .get_et_sset_count = ath9k_htc_get_et_sset_count, + .get_et_stats = ath9k_htc_get_et_stats, + .get_et_strings = ath9k_htc_get_et_strings, +#endif +}; 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