From patchwork Thu Jun 2 05:14:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aditya Kumar Singh X-Patchwork-Id: 578471 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 88F3CC433EF for ; Thu, 2 Jun 2022 05:14:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230010AbiFBFOv (ORCPT ); Thu, 2 Jun 2022 01:14:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230005AbiFBFOt (ORCPT ); Thu, 2 Jun 2022 01:14:49 -0400 Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 935F3FC4C1 for ; Wed, 1 Jun 2022 22:14:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654146888; x=1685682888; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=bNlas2jCBHRERNM0J6iM7bEC6MIm+oNEf0L7hMpp1sY=; b=HA2O6SqUwE0K9DAC/bcOVFVxhHVGLWvkZuM5m5tmShZ9xew+z6pYSjwu bVnWVNaA+4alX4VBN33Vm1wyqWPwbPx59odDKPIKM+7uRbLa0sT1ScvMG Ae14Cja6AFwQXbc1wJQITE0w5fbx93y34HO2rEHWWOsFCnF8Jh2qtCr7b k=; Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by alexa-out-sd-01.qualcomm.com with ESMTP; 01 Jun 2022 22:14:48 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg02-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jun 2022 22:14:48 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 1 Jun 2022 22:14:47 -0700 Received: from adisi-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Wed, 1 Jun 2022 22:14:45 -0700 From: Aditya Kumar Singh To: CC: , Aditya Kumar Singh Subject: [PATCH 2/2] ath11k: add get_txpower mac ops Date: Thu, 2 Jun 2022 10:44:25 +0530 Message-ID: <20220602051425.9265-3-quic_adisi@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220602051425.9265-1-quic_adisi@quicinc.com> References: <20220602051425.9265-1-quic_adisi@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Driver does not support get_txpower mac ops because of which cfg80211 returns vif->bss_conf.txpower to user space. bss_conf.txpower gets its value from ieee80211_channel->max_reg_power. However, the final txpower is dependent on few other parameters apart from max regulatory supported power. It is the firmware which knows about all these parameters and considers the minimum for each packet transmission. All ath11k firmware reports the final tx power in firmware pdev stats which falls under fw_stats. Add get_txpower mac ops to get the tx power from firmware leveraging fw_stats and return it accordingly. Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-01100-QCAHKSWPL_SILICONZ-1 Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.5.0.1-01100-QCAHKSWPL_SILICONZ-1 Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3 Signed-off-by: Aditya Kumar Singh --- drivers/net/wireless/ath/ath11k/mac.c | 91 +++++++++++++++++++++++++++ 1 file changed, 91 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c index f11956163822..f2502ce7deac 100644 --- a/drivers/net/wireless/ath/ath11k/mac.c +++ b/drivers/net/wireless/ath/ath11k/mac.c @@ -8471,6 +8471,94 @@ static int ath11k_mac_op_remain_on_channel(struct ieee80211_hw *hw, return ret; } +static int ath11k_fw_stats_request(struct ath11k *ar, + struct stats_request_params *req_param) +{ + struct ath11k_base *ab = ar->ab; + unsigned long time_left; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + ar->fw_stats_done = false; + ath11k_fw_stats_pdevs_free(&ar->fw_stats.pdevs); + spin_unlock_bh(&ar->data_lock); + + reinit_completion(&ar->fw_stats_complete); + + ret = ath11k_wmi_send_stats_request_cmd(ar, req_param); + if (ret) { + ath11k_warn(ab, "could not request fw stats (%d)\n", + ret); + return ret; + } + + time_left = wait_for_completion_timeout(&ar->fw_stats_complete, + 1 * HZ); + + if (!time_left) + return -ETIMEDOUT; + + return 0; +} + +static int ath11k_mac_op_get_txpower(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + int *dbm) +{ + struct ath11k *ar = hw->priv; + struct ath11k_base *ab = ar->ab; + struct stats_request_params req_param; + struct ath11k_fw_stats_pdev *pdev; + 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. + */ + mutex_lock(&ar->conf_mutex); + + if (ar->state != ATH11K_STATE_ON) + goto err_fallback; + + req_param.pdev_id = ar->pdev->pdev_id; + req_param.vdev_id = 0; + req_param.stats_id = WMI_REQUEST_PDEV_STAT; + + ret = ath11k_fw_stats_request(ar, &req_param); + if (ret) { + ath11k_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 ath11k_fw_stats_pdev, list); + if (!pdev) { + spin_unlock_bh(&ar->data_lock); + goto err_fallback; + } + + /* tx power is set as 2 units per dBm in FW. */ + *dbm = pdev->chan_tx_power / 2; + + spin_unlock_bh(&ar->data_lock); + mutex_unlock(&ar->conf_mutex); + + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "%s: txpower: %d from fw\n", __func__, *dbm); + return 0; + +err_fallback: + mutex_unlock(&ar->conf_mutex); + /* We didn't get txpower from FW. Hence, relying on vif->bss_conf.txpower */ + *dbm = vif->bss_conf.txpower; + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "%s: txpower from bss_conf\n", __func__); + return 0; +} + static const struct ieee80211_ops ath11k_ops = { .tx = ath11k_mac_op_tx, .start = ath11k_mac_op_start, @@ -8521,6 +8609,7 @@ static const struct ieee80211_ops ath11k_ops = { #if IS_ENABLED(CONFIG_IPV6) .ipv6_addr_change = ath11k_mac_op_ipv6_changed, #endif + .get_txpower = ath11k_mac_op_get_txpower, .set_sar_specs = ath11k_mac_op_set_bios_sar_specs, .remain_on_channel = ath11k_mac_op_remain_on_channel, @@ -9129,6 +9218,8 @@ int ath11k_mac_allocate(struct ath11k_base *ab) clear_bit(ATH11K_FLAG_MONITOR_VDEV_CREATED, &ar->monitor_flags); ar->vdev_id_11d_scan = ATH11K_11D_INVALID_VDEV_ID; init_completion(&ar->completed_11d_scan); + + ath11k_fw_stats_init(ar); } return 0;