From patchwork Fri Jun 3 05:26:36 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: 578713 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 04564C43334 for ; Fri, 3 Jun 2022 05:27:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240429AbiFCF1A (ORCPT ); Fri, 3 Jun 2022 01:27:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240434AbiFCF07 (ORCPT ); Fri, 3 Jun 2022 01:26:59 -0400 Received: from alexa-out-sd-02.qualcomm.com (alexa-out-sd-02.qualcomm.com [199.106.114.39]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 38AEFBE0F for ; Thu, 2 Jun 2022 22:26:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654234017; x=1685770017; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=vsdHMBbWYySCVMmt2M7J4AJC+lyS3tKNTe9m+MALQis=; b=aysv5W5Y29pGEeuCt3x46z4wM55wuMGtd+ueg9A9UpS182NaHhHprysN MjpbKBd5v6gGc0KkuAvjePoEKdsPq4Y+OicPFNlqW5i3nFhS/atgpU76h zTCKjQUwul0quYR5AyAu9ds4RoZihUJK77sY2q5wt413p8kQKDVu1yRD9 o=; Received: from unknown (HELO ironmsg04-sd.qualcomm.com) ([10.53.140.144]) by alexa-out-sd-02.qualcomm.com with ESMTP; 02 Jun 2022 22:26:56 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg04-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Jun 2022 22:26:56 -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; Thu, 2 Jun 2022 22:26:55 -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; Thu, 2 Jun 2022 22:26:54 -0700 From: Aditya Kumar Singh To: CC: , Aditya Kumar Singh Subject: [PATCH v2 2/2] ath11k: add get_txpower mac ops Date: Fri, 3 Jun 2022 10:56:36 +0530 Message-ID: <20220603052636.22854-3-quic_adisi@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220603052636.22854-1-quic_adisi@quicinc.com> References: <20220603052636.22854-1-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 | 92 +++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c index f11956163822..e0b6c9aa4727 100644 --- a/drivers/net/wireless/ath/ath11k/mac.c +++ b/drivers/net/wireless/ath/ath11k/mac.c @@ -8471,6 +8471,95 @@ 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 = {0}; + 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.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, "txpower from firmware %d, reported %d dBm\n", + pdev->chan_tx_power, *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, "txpower from firmware NaN, reported %d dBm\n", + *dbm); + return 0; +} + static const struct ieee80211_ops ath11k_ops = { .tx = ath11k_mac_op_tx, .start = ath11k_mac_op_start, @@ -8521,6 +8610,7 @@ 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 +9219,8 @@ 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;