From mboxrd@z Thu Jan 1 00:00:00 1970 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 B4B43C001DF for ; Mon, 31 Jul 2023 05:39:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229808AbjGaFjv (ORCPT ); Mon, 31 Jul 2023 01:39:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229955AbjGaFjr (ORCPT ); Mon, 31 Jul 2023 01:39:47 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6F021738; Sun, 30 Jul 2023 22:39:18 -0700 (PDT) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 36V5IHoU031259; Mon, 31 Jul 2023 05:39:10 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=message-id : date : mime-version : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding; s=qcppdkim1; bh=Y37+2zogaPTYO9ta+KBrS9cJl/BaP8CRdIqHRWIBk7c=; b=AEb7imhqFNGFyOdBQEE/gEwDQ4b33tb2J9gkcHKAwIbp3er5rX+vw49ZWK6iV5RqMDz2 35h3kA2jZEVD1YLw5X6yU8CG7dPO5OBELz/bdvmYkEzE7kZhAKHSTzaWNjbGMJqLMcWI YEFs7N/Gqn3ItIZk7LJl+ASl3gMsp8VaeelfkNhAAlKMirBwijoaJm2FA7K50wDJx1o3 Ptd8++f1GcFe/7od246rGvN4nKaINaFbg2rXK1IxM1pbq9msusEdongUmjWTpZH2JjRg +XzeJTMWK5pU5Jqexy853FcGZjv4lFryW4tlHNe3ca8QKh002nLgIPFAaW4sdmiNxUhu cA== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3s4uantqdj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 31 Jul 2023 05:39:10 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 36V5d9S5021500 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 31 Jul 2023 05:39:09 GMT Received: from [10.217.219.216] (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 15.2.1118.30; Sun, 30 Jul 2023 22:39:06 -0700 Message-ID: <7a84284c-d842-255d-8b68-037f79367ee7@quicinc.com> Date: Mon, 31 Jul 2023 11:09:03 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.13.1 Subject: Re: [PATCH v4 0/9] PCI: EPC: Add support to wake up host from D3 states Content-Language: en-US To: Manivannan Sadhasivam CC: , , , , , , , , , References: <1689232218-28265-1-git-send-email-quic_krichai@quicinc.com> <20230728043726.GJ4433@thinkpad> From: Krishna Chaitanya Chundru In-Reply-To: <20230728043726.GJ4433@thinkpad> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.80.80.8] 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-GUID: tn6oj-hh4u42sMjLTjmxs--ob8FVfnD3 X-Proofpoint-ORIG-GUID: tn6oj-hh4u42sMjLTjmxs--ob8FVfnD3 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-27_10,2023-07-26_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 clxscore=1015 malwarescore=0 impostorscore=0 mlxscore=0 suspectscore=0 spamscore=0 mlxlogscore=755 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307310050 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/28/2023 10:07 AM, Manivannan Sadhasivam wrote: > On Thu, Jul 13, 2023 at 12:40:09PM +0530, Krishna chaitanya chundru wrote: >> Here we propose this patch series to add support in PCI endpoint >> driver to wake up host from D3 states. >> >> As endpoint cannot send any data/MSI when the D-state is in >> D3cold or D3hot. Endpoint needs to bring the device back to D0 >> to send any kind of data. >> >> For this endpoint needs to send inband PME the device is in D3 state or >> toggle wake when the device is D3 cold and vaux is not supplied. >> >> As EPF doestn't know the D-state of the PCI, added a notify op whenever >> device state changes. >> >> Based on the D-state the EPF driver decides to wake host either by >> toggling wake or by sending PME. >> >> When the MHI state is in M3 MHI driver will wakeup the host using the >> wakeup op. >> > Please split this series into two. One adding D-state support and another > (dependant) adding wakeup support. We can try to merge atleast first one for > 6.6. > > - Mani Sure, can you point me any patch series that is added dependant on another series. >> --- >> Changes from v3: >> - changed the bool return type to int for waking the host in mhi ep driver >> as suggested by dan and bjorn. >> - Changed commit logs as suggested by bjorn. >> Changes from v2: >> - Addressed review comments made by mani. >> Changes from v1: >> - Moved from RFC patch to regular patch >> - Inclueded EPF patch and added a new op patch to notify D-state change. >> --- >> >> Krishna chaitanya chundru (9): >> PCI: endpoint: Add D-state change notifier support >> PCI: qcom-ep: Add support for D-state change notification >> PCI: epf-mhi: Add support for handling D-state notify from EPC >> PCI: qcom-ep: Update the D-state log >> PCI: endpoint: Add wakeup host API to EPC core >> PCI: dwc: Add wakeup host op to pci_epc_ops >> PCI: qcom-ep: Add wake up host op to dw_pcie_ep_ops >> PCI: epf-mhi: Add wakeup host op >> bus: mhi: ep: wake up host if the MHI state is in M3 >> >> Documentation/PCI/endpoint/pci-endpoint.rst | 11 +++++ >> drivers/bus/mhi/ep/main.c | 27 ++++++++++++ >> drivers/pci/controller/dwc/pcie-designware-ep.c | 12 +++++ >> drivers/pci/controller/dwc/pcie-designware.h | 3 ++ >> drivers/pci/controller/dwc/pcie-qcom-ep.c | 36 ++++++++++++++- >> drivers/pci/endpoint/functions/pci-epf-mhi.c | 27 ++++++++++++ >> drivers/pci/endpoint/pci-epc-core.c | 58 +++++++++++++++++++++++++ >> include/linux/mhi_ep.h | 4 ++ >> include/linux/pci-epc.h | 12 +++++ >> include/linux/pci-epf.h | 1 + >> 10 files changed, 190 insertions(+), 1 deletion(-) >> >> -- >> 2.7.4 >>