From patchwork Wed Jul 10 11:08:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna chaitanya chundru X-Patchwork-Id: 1958798 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=quicinc.com header.i=@quicinc.com header.a=rsa-sha256 header.s=qcppdkim1 header.b=Cok2fXTK; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=139.178.88.99; helo=sv.mirrors.kernel.org; envelope-from=linux-pci+bounces-10060-incoming=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org [139.178.88.99]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4WJw8W1S7Hz1xqj for ; Wed, 10 Jul 2024 21:08:43 +1000 (AEST) Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id E5A31283386 for ; Wed, 10 Jul 2024 11:08:41 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 9F75D18FC7B; Wed, 10 Jul 2024 11:08:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="Cok2fXTK" X-Original-To: linux-pci@vger.kernel.org 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 1138518FA34; Wed, 10 Jul 2024 11:08:36 +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=1720609718; cv=none; b=AuaOVEySdfr/Y9I2/PSRIYz+vw6bp+/8RbrJFV5EswPVjJRDMibYRsVF0v907YbQ56aY5xTe15crorJ8oR5d977h0VqMYHQucyBSO1hZJ/KCK6mcieMLC06U9Q7lw8IW+cBrSeV6UvVlMSb6Jfj37EMcsAlUmy4JRgUX8i9ujw4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720609718; c=relaxed/simple; bh=lnEmNUrZVKMUb3Zni61Oi8AYwUR/5XFHpGCQCXIYX4o=; h=From:Subject:Date:Message-ID:MIME-Version:Content-Type:To:CC; b=IzaqOW4OHjjKhSFifJZ07ywamdiz0guMIX0yrx7LOCTscE/Ihrfpm2ldvQI7U7JtRaZI+a+rBhdY5faec3r4ZoPgrsFKk19vIXOVdyety8YCfzR6yjh0e23Oj/XEkbjHJLWLh7nni66FBGTbdrDDOQ8T9cDO+nQn/5qsRBHeGoM= 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=Cok2fXTK; 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 Received: from pps.filterd (m0279869.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 46A29WU9005080; Wed, 10 Jul 2024 11:08:26 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=rY7ukcT6x6DTecR1+lqSVc JxN2MKM+D2xH/UXR4S8Bs=; b=Cok2fXTKPYFGaxIPpOJNjtRhZKsj4wAekRb2t6 c4ArLVOI3wqz9eY/mt/iuUZQkImYJOlzyeN8K9+P8iVQ8OQox2Af6d6HekAF6FIG CC5RmGxLAYI0jDCLz+stUM/HyRwWkdY8pUsMom28QM4qNml0/TC1bjrHMGwLf6ti fXilw47oLiZlvRvEKPcrCfAytXt2bu/Fmx+sMTBPtp5TwehJQHl+XinKtYUw9Jdp QbYaoVCgA30gColzWWhB702IHajIJicU5VKjvina3dBb91hB0wTp9lGQCgNzzMat q1H7m7sjRuqra98ggFKGz2UkYlYD8vq3mImup9udi7zrHtaw== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 408w0rbye2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 10 Jul 2024 11:08:25 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 46AB8ONx004543 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 10 Jul 2024 11:08:24 GMT Received: from hu-krichai-hyd.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 15.2.1544.9; Wed, 10 Jul 2024 04:08:19 -0700 From: Krishna chaitanya chundru Subject: [PATCH v7 0/4] PCI: endpoint: add D-state change notifier support Date: Wed, 10 Jul 2024 16:38:13 +0530 Message-ID: <20240710-dstate_notifier-v7-0-8d45d87b2b24@quicinc.com> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAJ1rjmYC/x3MQQqAIBBG4avErBNsEISuEhGlvzUbDZUIorsnL b/Few8VZEGhsXso45IiKTbYviN3rHGHEt9MrNloO2jlS10rlpiqBEFW7DgY8GYAT606M4Lc/3G a3/cDNMpxYWEAAAA= To: Manivannan Sadhasivam , =?utf-8?q?Krzy?= =?utf-8?q?sztof_Wilczy=C5=84ski?= , Kishon Vijay Abraham I , Bjorn Helgaas , Jonathan Corbet , Lorenzo Pieralisi , Rob Herring CC: , , , , , , , , , , "Krishna chaitanya chundru" , Manivannan Sadhasivam X-Mailer: b4 0.13-dev-83828 X-Developer-Signature: v=1; a=ed25519-sha256; t=1720609699; l=1933; i=quic_krichai@quicinc.com; s=20230907; h=from:subject:message-id; bh=lnEmNUrZVKMUb3Zni61Oi8AYwUR/5XFHpGCQCXIYX4o=; b=V065DTfjdyMA4QSQ0X0j1l94+d0jzwUjy/7IKIBy29ub3y/bs2bpPfCtzKzpv3awNyFJkbVjA BKDxS+7Np/hCXQQ+FeDB/lSi+sZPnZRahMZLlRIQQBOnm+mOgHFCycC X-Developer-Key: i=quic_krichai@quicinc.com; a=ed25519; pk=10CL2pdAKFyzyOHbfSWHCD0X0my7CXxj8gJScmn1FAg= X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: kdssdNB2yapj9PoiaPUzUaTDDZvVTU6v X-Proofpoint-GUID: kdssdNB2yapj9PoiaPUzUaTDDZvVTU6v 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=2024-07-10_06,2024-07-10_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 adultscore=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 mlxlogscore=837 phishscore=0 spamscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2406140001 definitions=main-2407100076 In this series we added the support to nofity the EPF driver whenever there is change in the D-state if the EPF driver registered for it. This series needed by the following series for epf driver to know whether link is in D3Cold or D3hot to wake the host because EPF driver needs to send PME when the link is D3hot and toggle wake when the link is in D3Cold('PCI: EPC: Add support to wake up host from D3 states'). The following link is for older series a newer series will be sent after rebasing on this series. https://lore.kernel.org/linux-pci/1690952359-8625-4-git-send-email-quic_krichai@quicinc.com/T/ Signed-off-by: Krishna chaitanya chundru --- Changes from v6: - Rebased on linux next. - Link to v6: https://lore.kernel.org/all/20230908-dstate_change-v6-0-b414a6edd765@quicinc.com/T/ Changes from v5: - Fixed compilation errors & removed checks in the dstate_notify() function as suggested by bjorn. --- Krishna chaitanya chundru (4): PCI: endpoint: Add D-state change notifier support PCI: qcom-ep: Add support for D-state change notification PCI: qcom-ep: Print D-state name to distinguish D3hot/D3cold PCI: epf-mhi: Add support for handling D-state notify from EPC Documentation/PCI/endpoint/pci-endpoint.rst | 3 +++ drivers/pci/controller/dwc/pcie-qcom-ep.c | 10 ++++++++-- drivers/pci/endpoint/functions/pci-epf-mhi.c | 11 +++++++++++ drivers/pci/endpoint/pci-epc-core.c | 24 ++++++++++++++++++++++++ include/linux/mhi_ep.h | 3 +++ include/linux/pci-epc.h | 2 ++ include/linux/pci-epf.h | 2 ++ 7 files changed, 53 insertions(+), 2 deletions(-) --- base-commit: 82d01fe6ee52086035b201cfa1410a3b04384257 change-id: 20240710-dstate_notifier-2c2f4e2b4eed Best regards,