From patchwork Tue Apr 9 19:09:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nithyanantham Paramasivam X-Patchwork-Id: 787929 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 73D9A15746C for ; Tue, 9 Apr 2024 19:10:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712689833; cv=none; b=atd9uY36ZBwtuRVFS77aYeqFW/8rHP25ljhlzDjqmyi2toNrbNACAXhIeWQtW14VG3tWdQuVaeWAGlcAUXYrDh+E41FO4qhRQC/hOjTBtUcJ6oLkCjMwMDGAVlwix1W4AbfQygV3/w6t1OWwsGMwCicxKWUUAPmLJkkXDen4LhI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712689833; c=relaxed/simple; bh=wnn4+CHRTwaPD16cKR9p0qoBI2naTCbfck+zBilJuCU=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Ilc4fwNp0aTN3XpwOTGNib8s3JV2K+MmIgilYbPVVmjRWkYjcK3RgdwW4Q2r0NEZELO1cKGIjp4nwB+IXiVxJj0+LNPdM+7KxarRQR/1gl/WvSCYu6J8bdE5M3C4Cu9Lk4I2I4kLwznzhNNkkbdaXxJ0ZXrJd29K5QCp0aJ8XjM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=Etjk0I11; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="Etjk0I11" Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 439BT7DY023437; Tue, 9 Apr 2024 19:10:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= from:to:cc:subject:date:message-id:mime-version:content-type; s= qcppdkim1; bh=1Lz/vNzj/7zChq/d40PDzqlFsByM2ImgVdUYiaJxcEw=; b=Et jk0I11x5c/ZWs8Xdpyk0WbM3jcIZ/cyYZJBMhoGuqKI0e5LYyLtYIApIdBUTCePo QjpArQWDJ4Y/psc0wHnb0DE4gAim4YWrLJWe8DwA122EIhscVoGcZWUSEepLEJM7 HdyfB7zHdTbqYy55tuipEAcWiiLQRA5YJTXb3owxF5uKWFAyO+UNGT44bM9rFN/y CJmuQcxPMaVd8e4p1bY00CcmatCXKw1pQwqoEWNUOv/3YoYoyGGOmCV8tOYPTDOG QFzQKaaEOwfONDXbVGo2FAWo8QfUcoyoPGTMNGKIMR2+VwyLCB7xpycXgi6nzt0W ogeLl24F9ZeoT4UhQcSw== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3xd4ues0da-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 09 Apr 2024 19:10:18 +0000 (GMT) Received: from nalasex01b.na.qualcomm.com (nalasex01b.na.qualcomm.com [10.47.209.197]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 439JAHPP003974 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 9 Apr 2024 19:10:17 GMT Received: from hu-nithp-blr.qualcomm.com (10.80.80.8) by nalasex01b.na.qualcomm.com (10.47.209.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.4; Tue, 9 Apr 2024 12:10:15 -0700 From: Nithyanantham Paramasivam To: CC: , Nithyanantham Paramasivam Subject: [PATCH] wifi: ath12k: Fix Tx Completion Ring(WBM2SW) Setup Failure Date: Wed, 10 Apr 2024 00:39:22 +0530 Message-ID: <20240409190922.4180631-1-quic_nithp@quicinc.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01b.na.qualcomm.com (10.47.209.197) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: fIhTfBEdF1K9VZblijNcHZonmxV_8xjV X-Proofpoint-ORIG-GUID: fIhTfBEdF1K9VZblijNcHZonmxV_8xjV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-09_12,2024-04-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 spamscore=0 mlxscore=0 malwarescore=0 phishscore=0 bulkscore=0 adultscore=0 clxscore=1015 mlxlogscore=958 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2404090126 We observe intermittent ping failures from the access point (AP) to station (STA) in any mode(AP-STA or Mesh) configured. Specifically, the transmission completion status is not received at Tx completion ring id-4(WBM2SW ring4) for the packets transmitted via TCL DATA ring id-3. This prevents freeing up Tx descriptors and leads to buffer exhaustion. Currently, during initialization of the WBM2SW ring, we are directly mapping the ring number to the ring mask to obtain the ring mask group index. This approach is causing setup failures for WBM2SW ring-4. Similarly, during runtime, when receiving incoming transmission completion status, the validation of the ring number by mapping the interrupted ring mask. This is resulting in validation failure. Thereby preventing entry into the completion handler(ath12k_dp_tx_completion_handler()). The existing design assumed that the ring numbers would always be sequential and could be directly mapped with the ring mask. However, this assumption does not hold true for WBM2SW ring-4. Therefore, modify the design such that, instead of mapping the ring number, the ring ID is mapped with the ring mask. According to this design: 1. During initialization of the WBM2SW ring, mapping the ring ID to the ring mask will ensure obtaining the correct ring mask group ID. 2. During runtime, validating the interrupted ring mask group ID within the transmission completion group is sufficient. This approach allows the ring ID to be derived from the interrupted ring mask and enables entry into the completion handler. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1 Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices") Signed-off-by: Nithyanantham Paramasivam Acked-by: Jeff Johnson --- drivers/net/wireless/ath/ath12k/dp.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) base-commit: dc410c4accd2fe64479a1f4ebc47ec9cd3928f4a diff --git a/drivers/net/wireless/ath/ath12k/dp.c b/drivers/net/wireless/ath/ath12k/dp.c index a0aa8c571867..86d80fd5e2c5 100644 --- a/drivers/net/wireless/ath/ath12k/dp.c +++ b/drivers/net/wireless/ath/ath12k/dp.c @@ -127,7 +127,9 @@ static int ath12k_dp_srng_find_ring_in_mask(int ring_num, const u8 *grp_mask) static int ath12k_dp_srng_calculate_msi_group(struct ath12k_base *ab, enum hal_ring_type type, int ring_num) { + const struct ath12k_hal_tcl_to_wbm_rbm_map *map; const u8 *grp_mask; + int i; switch (type) { case HAL_WBM2SW_RELEASE: @@ -135,6 +137,14 @@ static int ath12k_dp_srng_calculate_msi_group(struct ath12k_base *ab, grp_mask = &ab->hw_params->ring_mask->rx_wbm_rel[0]; ring_num = 0; } else { + map = ab->hw_params->hal_ops->tcl_to_wbm_rbm_map; + for (i = 0; i < ab->hw_params->max_tx_ring; i++) { + if (ring_num == map[i].wbm_ring_num) { + ring_num = i; + break; + } + } + grp_mask = &ab->hw_params->ring_mask->tx[0]; } break; @@ -876,11 +886,9 @@ int ath12k_dp_service_srng(struct ath12k_base *ab, enum dp_monitor_mode monitor_mode; u8 ring_mask; - while (i < ab->hw_params->max_tx_ring) { - if (ab->hw_params->ring_mask->tx[grp_id] & - BIT(ab->hw_params->hal_ops->tcl_to_wbm_rbm_map[i].wbm_ring_num)) - ath12k_dp_tx_completion_handler(ab, i); - i++; + if (ab->hw_params->ring_mask->tx[grp_id]) { + i = fls(ab->hw_params->ring_mask->tx[grp_id]) - 1; + ath12k_dp_tx_completion_handler(ab, i); } if (ab->hw_params->ring_mask->rx_err[grp_id]) {