From patchwork Tue Oct 22 04:17:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 13845093 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 A01F4433BB for ; Tue, 22 Oct 2024 04:17:23 +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=1729570646; cv=none; b=POcimswt+5NJm3ZOpWVDUyH0KXujvT1yOp8jd8xm75SqiWzs+CWrVm+tbaYrx43zKuX1ooZD/bo1vf58se1QpP2o0yl3GeT3lyCdqIIi9UpCo5SmhRg97yhq6hV67HHVCf3R7vFrAtsNiHM25mym0lUxEn3qcax/nlz2RyBDL6c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729570646; c=relaxed/simple; bh=/58otU+mAPd8jrtLUJ/LEJCMOq0Y8R9ln/E00PBpe04=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Nm3ghrVkVFsBNZczZSQfVg2o10/L8Ai2P5VtAr20K8Dummva1X0CNOicI7CcsNBWVUESJY0PkBlkYEB8ipkDP3+D/KjbnZjxzGPjm+D3on2D2kUvXmqf8xqbQG+/1Yfp9WIBDZqoZFAoLFHpia/Tb4k7KUFOpdCRBnMcz4tv4ZQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=fail smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=EEi3ogLg; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="EEi3ogLg" Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49LJ909j028248 for ; Tue, 22 Oct 2024 04:17:17 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= 7xKskZvo1JH0YHB5j6L+rhDgLQp1E+PifEVPToIxcdA=; b=EEi3ogLgfHlwN63T VT9zPpmvs/eMMScMDC1s6w7FZbw7TjuaxyCv6Hs+9h6M5W94fJQQKEVEsV5YkeoM 5Ku7HTj+ysjru28cDGzDaltVe38MXi70JKeoY9uYofwacqJqyTR8FgmjhkusvmCo vqjiIfDaLQYS5k5DiBHBdSrfv+yuE3xrjl03UiVBLVzxmvwdlN40iHZfx7HwZLaa SDdAvu93MEF81/yA+sLbGLK2iJHqYeqmF2QITvBnXvNXyZzmXQzEfC0qLBavsAl1 xaUi9+ocIaPmY9+sUXTiwIJ7rKH7LSEhPPd114rZ8xGxeGI+dxBnT0BORRZ9/d35 qq/nzw== Received: from mail-pg1-f200.google.com (mail-pg1-f200.google.com [209.85.215.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 42c6vc6wm6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Tue, 22 Oct 2024 04:17:17 +0000 (GMT) Received: by mail-pg1-f200.google.com with SMTP id 41be03b00d2f7-7db9418552fso4548227a12.0 for ; Mon, 21 Oct 2024 21:17:17 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729570637; x=1730175437; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=7xKskZvo1JH0YHB5j6L+rhDgLQp1E+PifEVPToIxcdA=; b=aolbcV9BmuGhYHEsGmM0yft7vOAgIUArVoAIYiqTRnanF7o/9Jjedj8682mvtcsdE+ ZaEfx5JbLzZyoip6vpuq4c8RHRl6coh19ecHXFE5Lkn5bNgsRx87pDq6dkvw7jbp+EYj /HHwpTEWwuS3qLGniQPzRfAC0Z+QAfzra0KOUeALM/VK6Q/ngaUJkkzfSg1u+wGFmHLC NOF8Xi//RG72JrvnYr1a5Ip7t8PlWISu1rER5ypNuno3B1fuEIV0JpxDhSzxp7Ibofvh B5XkQVCo8/MkwOEJH4EM+5h+dNkZUWpm99eoKybb/3eX+keD0cnfDKrlPT23v1L5tzBh jRcw== X-Forwarded-Encrypted: i=1; AJvYcCUHhuztdDcdmJBiepLmcY5cLlibylOTDWtj8OWI7wU2fMBj9UwUVE6qjVLxGclh2I6SVpj982pJXfCUdWxLDcys@vger.kernel.org X-Gm-Message-State: AOJu0YyuPPwvkuU8tQdL8qKvE5O1DwRB32wy275Gx48iLBVNyqMSN5oc mPp8tP0wBXrIruhxc/upkJBNZu6r/hy3Qj4qOjuvh3+fVAfOLxcPgUIC4i/smbLyF5bPbnTGYdY NWRy853o06oPKGHOOqs+UuukC1li9wpW8fdtYeNHUTHrON1gSLhB5hzeu6DCHZnKbHUod X-Received: by 2002:a05:6a21:78d:b0:1d9:9b2:8c2a with SMTP id adf61e73a8af0-1d92c56dd3dmr17885245637.34.1729570636734; Mon, 21 Oct 2024 21:17:16 -0700 (PDT) X-Google-Smtp-Source: AGHT+IE78YH2hf1L82uustEvCpYYzLIPYCc25WObHjaFYC7/91IoiTJYQGN3QBS8OiZQL2iTOE4O9A== X-Received: by 2002:a05:6a21:78d:b0:1d9:9b2:8c2a with SMTP id adf61e73a8af0-1d92c56dd3dmr17885224637.34.1729570636406; Mon, 21 Oct 2024 21:17:16 -0700 (PDT) Received: from ip-172-31-25-79.us-west-2.compute.internal (ec2-35-81-238-112.us-west-2.compute.amazonaws.com. [35.81.238.112]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2e5ad25cb6dsm4836169a91.1.2024.10.21.21.17.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Oct 2024 21:17:15 -0700 (PDT) From: Bjorn Andersson Date: Tue, 22 Oct 2024 04:17:12 +0000 Subject: [PATCH 2/2] soc: qcom: pmic_glink: Handle GLINK intent allocation rejections Precedence: bulk X-Mailing-List: linux-remoteproc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241022-pmic-glink-ecancelled-v1-2-9e26fc74e0a3@oss.qualcomm.com> References: <20241022-pmic-glink-ecancelled-v1-0-9e26fc74e0a3@oss.qualcomm.com> In-Reply-To: <20241022-pmic-glink-ecancelled-v1-0-9e26fc74e0a3@oss.qualcomm.com> To: Bjorn Andersson , Mathieu Poirier , Chris Lew , Konrad Dybcio , Johan Hovold Cc: linux-arm-msm@vger.kernel.org, Bjorn Andersson , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Andersson , stable@vger.kernel.org X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1729570634; l=2629; i=bjorn.andersson@oss.qualcomm.com; s=20241022; h=from:subject:message-id; bh=/58otU+mAPd8jrtLUJ/LEJCMOq0Y8R9ln/E00PBpe04=; b=M6z9243vFSnt4Z0ApB6ZfscKtvvptNe5YFen5SppKT1aQOu4RImpegyQ4k25IyQz4rf6KNRxa /ZYKK2MuDGuBQtLSHVdzPZBR1b3v+3HaMrrStXFySAM+BSkjyplaLIP X-Developer-Key: i=bjorn.andersson@oss.qualcomm.com; a=ed25519; pk=SAhIzN2NcG7kdNPq3QMED+Agjgc2IyfGAldevLwbJnU= X-Proofpoint-GUID: A5CvwV-GzhKgDUuIGDbHCrjewImNbrwC X-Proofpoint-ORIG-GUID: A5CvwV-GzhKgDUuIGDbHCrjewImNbrwC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1015 priorityscore=1501 impostorscore=0 lowpriorityscore=0 suspectscore=0 spamscore=0 phishscore=0 bulkscore=0 mlxscore=0 adultscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410220027 Some versions of the pmic_glink firmware does not allow dynamic GLINK intent allocations, attempting to send a message before the firmware has allocated its receive buffers and announced these intent allocations will fail. When this happens something like this showns up in the log: [ 9.799719] pmic_glink_altmode.pmic_glink_altmode pmic_glink.altmode.0: failed to send altmode request: 0x10 (-125) [ 9.812446] pmic_glink_altmode.pmic_glink_altmode pmic_glink.altmode.0: failed to request altmode notifications: -125 [ 9.831796] ucsi_glink.pmic_glink_ucsi pmic_glink.ucsi.0: failed to send UCSI read request: -125 GLINK has been updated to distinguish between the cases where the remote is going down (-ECANCELLED) and the intent allocation being rejected (-EAGAIN). Retry the send until intent buffers becomes available, or an actual error occur. To avoid infinitely waiting for the firmware in the event that this misbehaves and no intents arrive, an arbitrary 10 second timeout is used. This patch was developed with input from Chris Lew. Reported-by: Johan Hovold Closes: https://lore.kernel.org/all/Zqet8iInnDhnxkT9@hovoldconsulting.com/#t Cc: stable@vger.kernel.org Signed-off-by: Bjorn Andersson Tested-by: Johan Hovold Reviewed-by: Johan Hovold --- drivers/soc/qcom/pmic_glink.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c index 9606222993fd78e80d776ea299cad024a0197e91..221639f3da149da1f967dbc769a97d327ffd6c63 100644 --- a/drivers/soc/qcom/pmic_glink.c +++ b/drivers/soc/qcom/pmic_glink.c @@ -13,6 +13,8 @@ #include #include +#define PMIC_GLINK_SEND_TIMEOUT (10*HZ) + enum { PMIC_GLINK_CLIENT_BATT = 0, PMIC_GLINK_CLIENT_ALTMODE, @@ -112,13 +114,23 @@ EXPORT_SYMBOL_GPL(pmic_glink_client_register); int pmic_glink_send(struct pmic_glink_client *client, void *data, size_t len) { struct pmic_glink *pg = client->pg; + unsigned long start; + bool timeout_reached = false; int ret; mutex_lock(&pg->state_lock); - if (!pg->ept) + if (!pg->ept) { ret = -ECONNRESET; - else - ret = rpmsg_send(pg->ept, data, len); + } else { + start = jiffies; + do { + timeout_reached = time_after(jiffies, start + PMIC_GLINK_SEND_TIMEOUT); + ret = rpmsg_send(pg->ept, data, len); + } while (ret == -EAGAIN && !timeout_reached); + + if (ret == -EAGAIN && timeout_reached) + ret = -ETIMEDOUT; + } mutex_unlock(&pg->state_lock); return ret;