From patchwork Thu Jul 18 06:13:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gokul Sriram Palanisamy X-Patchwork-Id: 813643 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 0324440856 for ; Thu, 18 Jul 2024 06:14:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721283249; cv=none; b=mNthd0IBv9MUES8c1Up/1WeakEzU3cKquczKQGic/2/IFSrxUFpxrt1LeLok5KbnKdledcXUdaeerL9KLSq0zOOOXbs41MORfXO6YM5lmCa89lasCYGilh/ccPkYIgHQl7zxn65jXokKh0T8eI8xvEzORlqpXQ9blCm0mMvpo58= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721283249; c=relaxed/simple; bh=Ceyd6pmyDNG9gS9FdaUqyPB1332+25P5MI9MtTRqPfY=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=dQpse0AP0EeQE8/DfjuySjyYnWkYvSyooIDavJ2s17U8wRMCsPvp1nQCpV08EwpCZ4B7Ukp2YBuUytyH4USnBbB1LgfenZ6AL4dyCn9RMuhj7dpo2CjgTybPRFfuvzFj6qk6RWk/PNfHOProYyJkhtv0T8pLSaa92EUf2WVUV+Y= 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=AQI8odIA; arc=none smtp.client-ip=205.220.180.131 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="AQI8odIA" Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 46I2fF1m023029; Thu, 18 Jul 2024 06:14:04 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:message-id :mime-version:subject:to; s=qcppdkim1; bh=8+W7iM7gFUzxf7sZZQBexh +F78DRCQAifhrrnR/WZ+I=; b=AQI8odIAjWyCdvqrsZoAEGdJCxVtiGHjPLgnC7 tO0SescRoXK0CEuVIpWM4p86L/kTEvSx4PqHn8RlNjOlCC3qqSD2gn8/KUS/gNXp 2uj8VRtmSzP6wQPjay1FHTNLupTt+i/whaLOGBAyEEStzEBHrEoE+d6xBC1bOHuL qb/mQVJ3ZWXDPuD3DEP/qDBqrywWmnxsiXC3K5h9ptBRvLYH+o00r68UUwGTd7Z1 SuJvCBhEQefC45NHAB5Ha4k26e+Fguw1qzu4G9q4gs7LLOvrtILIclSI3V74XzDI JeaVUAZjkx9xPhBOeTZbvo0+Q8kkHpUN8fppF7Vi+0QOT9zw== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 40dwfnmkk7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Jul 2024 06:14:04 +0000 (GMT) Received: from nasanex01c.na.qualcomm.com (nasanex01c.na.qualcomm.com [10.45.79.139]) by NASANPPMTA03.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 46I6E3Vn024470 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Jul 2024 06:14:03 GMT Received: from hu-gokulsri-blr.qualcomm.com (10.80.80.8) by nasanex01c.na.qualcomm.com (10.45.79.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 17 Jul 2024 23:14:00 -0700 From: Gokul Sriram Palanisamy To: , , CC: , , Subject: [PATCH 0/6] add improvements to mhi driver Date: Thu, 18 Jul 2024 11:43:38 +0530 Message-ID: <20240718061344.575653-1-quic_gokulsri@quicinc.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01c.na.qualcomm.com (10.45.79.139) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: L-_ERA9c7CrLXaLhmXilOu7DzaIWsWLS X-Proofpoint-ORIG-GUID: L-_ERA9c7CrLXaLhmXilOu7DzaIWsWLS X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-18_03,2024-07-17_02,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 malwarescore=0 suspectscore=0 priorityscore=1501 clxscore=1011 spamscore=0 mlxscore=0 phishscore=0 mlxlogscore=859 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2407180040 The below patches address - memory fragmentation issues: when several iterations of mhi controller register/unregister happens. In our case, we have a PCIe WiFi device for which fw is loaded everytime when 'wifi load' happens. For this, we need to allocate 9MiB of coherent memory with 512K segment size. After several iterations, when the memory gets fragmented and 512K segment becomes unavailable causing alloc failure. - debug requirements by printing critical mhi debug registers - bug fixes to mhi_irq_handler - RDDM timeout issue - memory carveout for RDDM segments. Gokul Sriram Palanisamy (2): drivers: bus: mhi: Added shared-dma-pool support for mhi_dev bus: mhi: dump debug registers in critical sections Karthick Shanmugham (1): bus: mhi: change IRQ_HANDLED to IRQ_NONE in mhi_irq_handler Praveenkumar I (1): bus: mhi: increase RDDM timeout Rajkumar Ayyasamy (1): bus: mhi: check for RDDM cookie set by device to indicate readiness Ram Kumar D (1): bus: mhi: add support to allocate rddm memory during crash time drivers/bus/mhi/host/boot.c | 209 ++++++++++++++++++++++++-------- drivers/bus/mhi/host/init.c | 70 ++++++++++- drivers/bus/mhi/host/internal.h | 37 +++++- drivers/bus/mhi/host/main.c | 115 +++++++++++++++++- drivers/bus/mhi/host/pm.c | 6 +- include/linux/mhi.h | 20 +++ 6 files changed, 397 insertions(+), 60 deletions(-)