diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c index a419ec7130f975996ff76e65633335f1d0141536..2f9be182fbfbb18e3d4a4d886437b3639ee8ad46 100644 --- a/drivers/net/wireless/ath/ath10k/core.c +++ b/drivers/net/wireless/ath/ath10k/core.c @@ -90,6 +90,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = true, + .dynamic_sar_support = false, }, { .id = QCA988X_HW_2_0_VERSION, @@ -124,6 +125,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = true, + .dynamic_sar_support = false, }, { .id = QCA9887_HW_1_0_VERSION, @@ -159,6 +161,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = QCA6174_HW_3_2_VERSION, @@ -189,6 +192,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .tx_stats_over_pktlog = false, .bmi_large_size_download = true, .supports_peer_stats_info = true, + .dynamic_sar_support = true, }, { .id = QCA6174_HW_2_1_VERSION, @@ -223,6 +227,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = QCA6174_HW_2_1_VERSION, @@ -257,6 +262,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = QCA6174_HW_3_0_VERSION, @@ -291,6 +297,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = QCA6174_HW_3_2_VERSION, @@ -329,6 +336,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .fw_diag_ce_download = true, .tx_stats_over_pktlog = false, .supports_peer_stats_info = true, + .dynamic_sar_support = true, }, { .id = QCA99X0_HW_2_0_DEV_VERSION, @@ -369,6 +377,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = QCA9984_HW_1_0_DEV_VERSION, @@ -416,6 +425,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = QCA9888_HW_2_0_DEV_VERSION, @@ -460,6 +470,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = QCA9377_HW_1_0_DEV_VERSION, @@ -494,6 +505,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = QCA9377_HW_1_1_DEV_VERSION, @@ -530,6 +542,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = true, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = QCA9377_HW_1_1_DEV_VERSION, @@ -557,6 +570,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .ast_skid_limit = 0x10, .num_wds_entries = 0x20, .uart_pin_workaround = true, + .dynamic_sar_support = false, }, { .id = QCA4019_HW_1_0_DEV_VERSION, @@ -598,6 +612,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = true, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = false, }, { .id = WCN3990_HW_1_0_DEV_VERSION, @@ -625,6 +640,7 @@ static const struct ath10k_hw_params ath10k_hw_params_list[] = { .hw_filter_reset_required = false, .fw_diag_ce_download = false, .tx_stats_over_pktlog = false, + .dynamic_sar_support = true, }, }; diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h index cd206b16d68f4ea0420227d86a4317ec124c1f5a..648ed36f845f1ad013c6d40739b32d602c2478d6 100644 --- a/drivers/net/wireless/ath/ath10k/core.h +++ b/drivers/net/wireless/ath/ath10k/core.h @@ -1295,6 +1295,9 @@ struct ath10k { bool coex_support; int coex_gpio_pin; + s32 tx_power_2g_limit; + s32 tx_power_5g_limit; + /* must be last */ u8 drv_priv[] __aligned(sizeof(void *)); }; diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h index c6ded21f5ed69bbb5a846115a12593a14291dfe4..6b03c7787e36a95bb0ed5020473f89905e36a913 100644 --- a/drivers/net/wireless/ath/ath10k/hw.h +++ b/drivers/net/wireless/ath/ath10k/hw.h @@ -623,6 +623,8 @@ struct ath10k_hw_params { /* provides bitrates for sta_statistics using WMI_TLV_PEER_STATS_INFO_EVENTID */ bool supports_peer_stats_info; + + bool dynamic_sar_support; }; struct htt_rx_desc; diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 7d98250380ec56a35a802ac577d5b8637a1fbc69..8c2bc54e9253dd876caf6525cd5434bb12281753 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -81,6 +81,17 @@ static struct ieee80211_rate ath10k_rates_rev2[] = { { .bitrate = 540, .hw_value = ATH10K_HW_RATE_OFDM_54M }, }; +static const struct cfg80211_sar_freq_ranges ath10k_sar_freq_ranges[] = { + {.start_freq = 2402, .end_freq = 2494 }, + {.start_freq = 5170, .end_freq = 5875 }, +}; + +static const struct cfg80211_sar_capa ath10k_sar_capa = { + .type = NL80211_SAR_TYPE_POWER, + .num_freq_ranges = (ARRAY_SIZE(ath10k_sar_freq_ranges)), + .freq_ranges = &ath10k_sar_freq_ranges[0], +}; + #define ATH10K_MAC_FIRST_OFDM_RATE_IDX 4 #define ath10k_a_rates (ath10k_rates + ATH10K_MAC_FIRST_OFDM_RATE_IDX) @@ -2880,6 +2891,158 @@ static int ath10k_mac_vif_recalc_txbf(struct ath10k *ar, return 0; } +static bool ath10k_mac_is_connected(struct ath10k *ar) +{ + struct ath10k_vif *arvif; + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (arvif->is_up && arvif->vdev_type == WMI_VDEV_TYPE_STA) + return true; + } + + return false; +} + +static int ath10k_mac_txpower_setup(struct ath10k *ar, int txpower) +{ + int ret; + u32 param; + int tx_power_2g, tx_power_5g; + bool connected; + + lockdep_assert_held(&ar->conf_mutex); + + /* ath10k internally uses unit of 0.5 dBm so multiply by 2 */ + tx_power_2g = txpower * 2; + tx_power_5g = txpower * 2; + + connected = ath10k_mac_is_connected(ar); + + if (connected && ar->tx_power_2g_limit) + if (tx_power_2g > ar->tx_power_2g_limit) + tx_power_2g = ar->tx_power_2g_limit; + + if (connected && ar->tx_power_5g_limit) + if (tx_power_5g > ar->tx_power_5g_limit) + tx_power_5g = ar->tx_power_5g_limit; + + ath10k_dbg(ar, ATH10K_DBG_MAC, "mac txpower 2g: %d, 5g: %d\n", + tx_power_2g, tx_power_5g); + + param = ar->wmi.pdev_param->txpower_limit2g; + ret = ath10k_wmi_pdev_set_param(ar, param, tx_power_2g); + if (ret) { + ath10k_warn(ar, "failed to set 2g txpower %d: %d\n", + tx_power_2g, ret); + return ret; + } + + param = ar->wmi.pdev_param->txpower_limit5g; + ret = ath10k_wmi_pdev_set_param(ar, param, tx_power_5g); + if (ret) { + ath10k_warn(ar, "failed to set 5g txpower %d: %d\n", + tx_power_5g, ret); + return ret; + } + + return 0; +} + +static int ath10k_mac_txpower_recalc(struct ath10k *ar) +{ + struct ath10k_vif *arvif; + int ret, txpower = -1; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + /* txpower not initialized yet? */ + if (arvif->txpower == INT_MIN) + continue; + + if (txpower == -1) + txpower = arvif->txpower; + else + txpower = min(txpower, arvif->txpower); + } + + if (txpower == -1) + return 0; + + ret = ath10k_mac_txpower_setup(ar, txpower); + if (ret) { + ath10k_warn(ar, "failed to setup tx power %d: %d\n", + txpower, ret); + return ret; + } + + return 0; +} + +static int ath10k_mac_set_sar_power(struct ath10k *ar) +{ + if (!ar->hw_params.dynamic_sar_support) + return -EOPNOTSUPP; + + if (!ath10k_mac_is_connected(ar)) + return 0; + + /* if connected, then arvif->txpower must be valid */ + return ath10k_mac_txpower_recalc(ar); +} + +static int ath10k_mac_set_sar_specs(struct ieee80211_hw *hw, + const struct cfg80211_sar_specs *sar) +{ + const struct cfg80211_sar_sub_specs *sub_specs; + struct ath10k *ar = hw->priv; + u32 i; + int ret; + + mutex_lock(&ar->conf_mutex); + + if (!ar->hw_params.dynamic_sar_support) { + ret = -EOPNOTSUPP; + goto err; + } + + if (!sar || sar->type != NL80211_SAR_TYPE_POWER || + sar->num_sub_specs == 0) { + ret = -EINVAL; + goto err; + } + + sub_specs = sar->sub_specs; + + /* 0dbm is not a practical value for ath10k, so use 0 + * as no SAR limitation on it. + */ + ar->tx_power_2g_limit = 0; + ar->tx_power_5g_limit = 0; + + /* note the power is in 0.25dbm unit, while ath10k uses + * 0.5dbm unit. + */ + for (i = 0; i < sar->num_sub_specs; i++) { + if (sub_specs->freq_range_index == 0) + ar->tx_power_2g_limit = sub_specs->power / 2; + else if (sub_specs->freq_range_index == 1) + ar->tx_power_5g_limit = sub_specs->power / 2; + + sub_specs++; + } + + ret = ath10k_mac_set_sar_power(ar); + if (ret) { + ath10k_warn(ar, "failed to set sar power: %d", ret); + goto err; + } + +err: + mutex_unlock(&ar->conf_mutex); + return ret; +} + /* can be called only in mac80211 callbacks due to `key_count` usage */ static void ath10k_bss_assoc(struct ieee80211_hw *hw, struct ieee80211_vif *vif, @@ -2968,6 +3131,8 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw, arvif->is_up = true; + ath10k_mac_set_sar_power(ar); + /* Workaround: Some firmware revisions (tested with qca6174 * WLAN.RM.2.0-00073) have buggy powersave state machine and must be * poked with peer param command. @@ -3010,6 +3175,8 @@ static void ath10k_bss_disassoc(struct ieee80211_hw *hw, arvif->is_up = false; + ath10k_mac_txpower_recalc(ar); + cancel_delayed_work_sync(&arvif->connection_loss_work); } @@ -5207,65 +5374,6 @@ static int ath10k_config_ps(struct ath10k *ar) return ret; } -static int ath10k_mac_txpower_setup(struct ath10k *ar, int txpower) -{ - int ret; - u32 param; - - lockdep_assert_held(&ar->conf_mutex); - - ath10k_dbg(ar, ATH10K_DBG_MAC, "mac txpower %d\n", txpower); - - param = ar->wmi.pdev_param->txpower_limit2g; - ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2); - if (ret) { - ath10k_warn(ar, "failed to set 2g txpower %d: %d\n", - txpower, ret); - return ret; - } - - param = ar->wmi.pdev_param->txpower_limit5g; - ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2); - if (ret) { - ath10k_warn(ar, "failed to set 5g txpower %d: %d\n", - txpower, ret); - return ret; - } - - return 0; -} - -static int ath10k_mac_txpower_recalc(struct ath10k *ar) -{ - struct ath10k_vif *arvif; - int ret, txpower = -1; - - lockdep_assert_held(&ar->conf_mutex); - - list_for_each_entry(arvif, &ar->arvifs, list) { - /* txpower not initialized yet? */ - if (arvif->txpower == INT_MIN) - continue; - - if (txpower == -1) - txpower = arvif->txpower; - else - txpower = min(txpower, arvif->txpower); - } - - if (txpower == -1) - return 0; - - ret = ath10k_mac_txpower_setup(ar, txpower); - if (ret) { - ath10k_warn(ar, "failed to setup tx power %d: %d\n", - txpower, ret); - return ret; - } - - return 0; -} - static int ath10k_config(struct ieee80211_hw *hw, u32 changed) { struct ath10k *ar = hw->priv; @@ -9272,6 +9380,7 @@ static const struct ieee80211_ops ath10k_ops = { #ifdef CONFIG_MAC80211_DEBUGFS .sta_add_debugfs = ath10k_sta_add_debugfs, #endif + .set_sar_specs = ath10k_mac_set_sar_specs, }; #define CHAN2G(_channel, _freq, _flags) { \ @@ -10009,6 +10118,9 @@ int ath10k_mac_register(struct ath10k *ar) goto err_free; } + if (ar->hw_params.dynamic_sar_support) + ar->hw->wiphy->sar_capa = &ath10k_sar_capa; + if (!test_bit(ATH10K_FLAG_RAW_MODE, &ar->dev_flags)) ar->hw->netdev_features = NETIF_F_HW_CSUM;