diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h index d07b55a4dd4a..bed996919f04 100644 --- a/drivers/net/wireless/ath/ath12k/core.h +++ b/drivers/net/wireless/ath/ath12k/core.h @@ -743,6 +743,7 @@ struct ath12k { u32 mlo_setup_status; u8 ftm_msgref; struct ath12k_fw_stats fw_stats; + unsigned long last_tx_power_update; }; struct ath12k_hw { diff --git a/drivers/net/wireless/ath/ath12k/mac.c b/drivers/net/wireless/ath/ath12k/mac.c index edd440ced9d8..9cb68a351263 100644 --- a/drivers/net/wireless/ath/ath12k/mac.c +++ b/drivers/net/wireless/ath/ath12k/mac.c @@ -4376,6 +4376,145 @@ static int ath12k_start_scan(struct ath12k *ar, return 0; } +int ath12k_mac_get_fw_stats(struct ath12k *ar, + struct ath12k_fw_stats_req_params *param) +{ + struct ath12k_base *ab = ar->ab; + struct ath12k_hw *ah = ath12k_ar_to_ah(ar); + unsigned long timeout, time_left; + int ret; + + guard(mutex)(&ah->hw_mutex); + + if (ah->state != ATH12K_HW_STATE_ON) + return -ENETDOWN; + + /* FW stats can get split when exceeding the stats data buffer limit. + * In that case, since there is no end marking for the back-to-back + * received 'update stats' event, we keep a 3 seconds timeout in case, + * fw_stats_done is not marked yet + */ + timeout = jiffies + msecs_to_jiffies(3 * 1000); + ath12k_fw_stats_reset(ar); + + reinit_completion(&ar->fw_stats_complete); + + ret = ath12k_wmi_send_stats_request_cmd(ar, param->stats_id, + param->vdev_id, param->pdev_id); + + if (ret) { + ath12k_warn(ab, "failed to request fw stats: %d\n", ret); + return ret; + } + + ath12k_dbg(ab, ATH12K_DBG_WMI, + "get fw stat pdev id %d vdev id %d stats id 0x%x\n", + param->pdev_id, param->vdev_id, param->stats_id); + + time_left = wait_for_completion_timeout(&ar->fw_stats_complete, 1 * HZ); + + if (!time_left) { + ath12k_warn(ab, "time out while waiting for get fw stats\n"); + return -ETIMEDOUT; + } + + /* Firmware sends WMI_UPDATE_STATS_EVENTID back-to-back + * when stats data buffer limit is reached. fw_stats_complete + * is completed once host receives first event from firmware, but + * still end might not be marked in the TLV. + * Below loop is to confirm that firmware completed sending all the event + * and fw_stats_done is marked true when end is marked in the TLV. + */ + for (;;) { + if (time_after(jiffies, timeout)) + break; + spin_lock_bh(&ar->data_lock); + if (ar->fw_stats.fw_stats_done) { + spin_unlock_bh(&ar->data_lock); + break; + } + spin_unlock_bh(&ar->data_lock); + } + return 0; +} + +static int ath12k_mac_op_get_txpower(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + unsigned int link_id, + int *dbm) +{ + struct ath12k_vif *ahvif = ath12k_vif_to_ahvif(vif); + struct ath12k_fw_stats_req_params params = {}; + struct ath12k_fw_stats_pdev *pdev; + struct ath12k_hw *ah = hw->priv; + struct ath12k_link_vif *arvif; + struct ath12k_base *ab; + struct ath12k *ar; + int ret; + + /* Final Tx power is minimum of Target Power, CTL power, Regulatory + * Power, PSD EIRP Power. We just know the Regulatory power from the + * regulatory rules obtained. FW knows all these power and sets the min + * of these. Hence, we request the FW pdev stats in which FW reports + * the minimum of all vdev's channel Tx power. + */ + lockdep_assert_wiphy(hw->wiphy); + + arvif = wiphy_dereference(ah->hw->wiphy, ahvif->link[link_id]); + if (!arvif || !arvif->ar) + return -EINVAL; + + ar = arvif->ar; + ab = ar->ab; + if (ah->state != ATH12K_HW_STATE_ON) + goto err_fallback; + + if (test_bit(ATH12K_FLAG_CAC_RUNNING, &ar->dev_flags)) + return -EAGAIN; + + /* Limit the requests to Firmware for fetching the tx power */ + if (ar->chan_tx_pwr != ATH12K_PDEV_TX_POWER_INVALID && + time_before(jiffies, + msecs_to_jiffies(ATH12K_PDEV_TX_POWER_REFRESH_TIME_MSECS) + + ar->last_tx_power_update)) + goto send_tx_power; + + params.pdev_id = ar->pdev->pdev_id; + params.vdev_id = arvif->vdev_id; + params.stats_id = WMI_REQUEST_PDEV_STAT; + ret = ath12k_mac_get_fw_stats(ar, ¶ms); + if (ret) { + ath12k_warn(ab, "failed to request fw pdev stats: %d\n", ret); + goto err_fallback; + } + + spin_lock_bh(&ar->data_lock); + pdev = list_first_entry_or_null(&ar->fw_stats.pdevs, + struct ath12k_fw_stats_pdev, list); + if (!pdev) { + spin_unlock_bh(&ar->data_lock); + goto err_fallback; + } + + /* tx power reported by firmware is in units of 0.5 dBm */ + ar->chan_tx_pwr = pdev->chan_tx_power / 2; + spin_unlock_bh(&ar->data_lock); + ar->last_tx_power_update = jiffies; + +send_tx_power: + *dbm = ar->chan_tx_pwr; + ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "txpower fetched from firmware %d dBm\n", + *dbm); + return 0; + +err_fallback: + /* We didn't get txpower from FW. Hence, relying on vif->bss_conf.txpower */ + *dbm = vif->bss_conf.txpower; + ath12k_dbg(ar->ab, ATH12K_DBG_MAC, "txpower from firmware NaN, reported %d dBm\n", + *dbm); + return 0; +} + static u8 ath12k_mac_find_link_id_by_ar(struct ath12k_vif *ahvif, struct ath12k *ar) { @@ -7600,6 +7739,7 @@ static int ath12k_mac_start(struct ath12k *ar) ar->num_created_vdevs = 0; ar->num_peers = 0; ar->allocated_vdev_map = 0; + ar->chan_tx_pwr = ATH12K_PDEV_TX_POWER_INVALID; /* Configure monitor status ring with default rx_filter to get rx status * such as rssi, rx_duration. @@ -8798,6 +8938,7 @@ static int ath12k_mac_op_add_chanctx(struct ieee80211_hw *hw, */ ar->rx_channel = ctx->def.chan; spin_unlock_bh(&ar->data_lock); + ar->chan_tx_pwr = ATH12K_PDEV_TX_POWER_INVALID; return 0; } @@ -8826,6 +8967,7 @@ static void ath12k_mac_op_remove_chanctx(struct ieee80211_hw *hw, */ ar->rx_channel = NULL; spin_unlock_bh(&ar->data_lock); + ar->chan_tx_pwr = ATH12K_PDEV_TX_POWER_INVALID; } static enum wmi_phy_mode @@ -10267,68 +10409,6 @@ static int ath12k_mac_op_get_survey(struct ieee80211_hw *hw, int idx, return 0; } -int ath12k_mac_get_fw_stats(struct ath12k *ar, - struct ath12k_fw_stats_req_params *param) -{ - struct ath12k_base *ab = ar->ab; - struct ath12k_hw *ah = ath12k_ar_to_ah(ar); - unsigned long timeout, time_left; - int ret; - - guard(mutex)(&ah->hw_mutex); - - if (ah->state != ATH12K_HW_STATE_ON) - return -ENETDOWN; - - /* FW stats can get split when exceeding the stats data buffer limit. - * In that case, since there is no end marking for the back-to-back - * received 'update stats' event, we keep a 3 seconds timeout in case, - * fw_stats_done is not marked yet - */ - timeout = jiffies + msecs_to_jiffies(3 * 1000); - ath12k_fw_stats_reset(ar); - - reinit_completion(&ar->fw_stats_complete); - - ret = ath12k_wmi_send_stats_request_cmd(ar, param->stats_id, - param->vdev_id, param->pdev_id); - - if (ret) { - ath12k_warn(ab, "failed to request fw stats: %d\n", ret); - return ret; - } - - ath12k_dbg(ab, ATH12K_DBG_WMI, - "get fw stat pdev id %d vdev id %d stats id 0x%x\n", - param->pdev_id, param->vdev_id, param->stats_id); - - time_left = wait_for_completion_timeout(&ar->fw_stats_complete, 1 * HZ); - - if (!time_left) { - ath12k_warn(ab, "time out while waiting for get fw stats\n"); - return -ETIMEDOUT; - } - - /* Firmware sends WMI_UPDATE_STATS_EVENTID back-to-back - * when stats data buffer limit is reached. fw_stats_complete - * is completed once host receives first event from firmware, but - * still end might not be marked in the TLV. - * Below loop is to confirm that firmware completed sending all the event - * and fw_stats_done is marked true when end is marked in the TLV. - */ - for (;;) { - if (time_after(jiffies, timeout)) - break; - spin_lock_bh(&ar->data_lock); - if (ar->fw_stats.fw_stats_done) { - spin_unlock_bh(&ar->data_lock); - break; - } - spin_unlock_bh(&ar->data_lock); - } - return 0; -} - static void ath12k_mac_op_sta_statistics(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta, @@ -10627,6 +10707,7 @@ static const struct ieee80211_ops ath12k_ops = { .assign_vif_chanctx = ath12k_mac_op_assign_vif_chanctx, .unassign_vif_chanctx = ath12k_mac_op_unassign_vif_chanctx, .switch_vif_chanctx = ath12k_mac_op_switch_vif_chanctx, + .get_txpower = ath12k_mac_op_get_txpower, .set_rts_threshold = ath12k_mac_op_set_rts_threshold, .set_frag_threshold = ath12k_mac_op_set_frag_threshold, .set_bitrate_mask = ath12k_mac_op_set_bitrate_mask, @@ -11379,11 +11460,10 @@ static int ath12k_mac_hw_register(struct ath12k_hw *ah) goto err_unregister_hw; } + ath12k_fw_stats_init(ar); ath12k_debugfs_register(ar); } - init_completion(&ar->fw_stats_complete); - return 0; err_unregister_hw: diff --git a/drivers/net/wireless/ath/ath12k/mac.h b/drivers/net/wireless/ath/ath12k/mac.h index 5e88b511ff8a..468992a2f712 100644 --- a/drivers/net/wireless/ath/ath12k/mac.h +++ b/drivers/net/wireless/ath/ath12k/mac.h @@ -33,6 +33,9 @@ struct ath12k_generic_iter { #define ATH12K_KEEPALIVE_MAX_IDLE 3895 #define ATH12K_KEEPALIVE_MAX_UNRESPONSIVE 3900 +#define ATH12K_PDEV_TX_POWER_INVALID ((u32)-1) +#define ATH12K_PDEV_TX_POWER_REFRESH_TIME_MSECS 5000 /* msecs */ + /* FIXME: should these be in ieee80211.h? */ #define IEEE80211_VHT_MCS_SUPPORT_0_11_MASK GENMASK(23, 16) #define IEEE80211_DISABLE_VHT_MCS_SUPPORT_0_11 BIT(24)