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 X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9B16DC31E49 for ; Wed, 19 Jun 2019 14:13:59 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1DCAF20B1F for ; Wed, 19 Jun 2019 14:13:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1DCAF20B1F Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 45TRl83fV4zDqCg for ; Thu, 20 Jun 2019 00:13:56 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=linux.ibm.com (client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=fbarrat@linux.ibm.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.ibm.com Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 45TQmV04YczDqp7 for ; Wed, 19 Jun 2019 23:30:01 +1000 (AEST) Received: from pps.filterd (m0098417.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x5JDM4bc006858 for ; Wed, 19 Jun 2019 09:29:59 -0400 Received: from e06smtp04.uk.ibm.com (e06smtp04.uk.ibm.com [195.75.94.100]) by mx0a-001b2d01.pphosted.com with ESMTP id 2t7kj47qvn-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 19 Jun 2019 09:29:57 -0400 Received: from localhost by e06smtp04.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 19 Jun 2019 14:28:42 +0100 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x5JDSfXq58916956 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 19 Jun 2019 13:28:41 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3FAADA4051; Wed, 19 Jun 2019 13:28:41 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E69DFA4055; Wed, 19 Jun 2019 13:28:40 +0000 (GMT) Received: from pic2.home (unknown [9.145.171.67]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 19 Jun 2019 13:28:40 +0000 (GMT) From: Frederic Barrat To: linuxppc-dev@lists.ozlabs.org, andrew.donnellan@au1.ibm.com, clombard@linux.ibm.com Subject: [RFC 00/11] opencapi: enable card reset and link retraining Date: Wed, 19 Jun 2019 15:28:29 +0200 X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 19061913-0016-0000-0000-0000028A7853 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19061913-0017-0000-0000-000032E7CF71 Message-Id: <20190619132840.27634-1-fbarrat@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-06-19_08:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=784 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906190109 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: aik@ozlabs.ru, arbab@linux.ibm.com, oohall@gmail.com, groug@kaod.org, alastair@au1.ibm.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This is the linux part of the work to use the PCI hotplug framework to control an opencapi card so that it can be reset and re-read after flashing a new FPGA image. It needs support in skiboot: http://patchwork.ozlabs.org/project/skiboot/list/?series=114803 On an old skiboot, it will do nothing. A virtual PCI slot is created for the opencapi adapter, and its state can be controlled through the pnv-php hotplug driver: echo 0|1 > /sys/bus/pci/slots/OPENCAPI-<...>/power Note that the power to the card is not really turned off, as the card needs to stay on to be flashed with a new image. Instead the card is placed in reset. The first part of the series mostly deals with the pci/ioda state, as the devices can now go away and the state needs to be cleaned up. The second part is modifications to the hotplug driver on powernv, so that a virtual slot is created for the opencapi adapters found in the device tree Frederic Barrat (11): powerpc/powernv/ioda: Fix ref count for devices with their own PE powerpc/powernv/ioda: Protect PE list powerpc/powernv/ioda: set up PE on opencapi device when enabling powerpc/powernv/ioda: Release opencapi device powerpc/powernv/ioda: Find opencapi slot for a device node pci/hotplug/pnv-php: Remove erroneous warning pci/hotplug/pnv-php: Improve error msg on power state change failure pci/hotplug/pnv-php: Register opencapi slots pci/hotplug/pnv-php: Relax check when disabling slot pci/hotplug/pnv-php: Wrap warnings in macro ocxl: Add PCI hotplug dependency to Kconfig arch/powerpc/include/asm/pnv-pci.h | 1 + arch/powerpc/platforms/powernv/pci-ioda.c | 106 ++++++++++++++-------- arch/powerpc/platforms/powernv/pci.c | 10 +- drivers/misc/ocxl/Kconfig | 1 + drivers/pci/hotplug/pnv_php.c | 66 ++++++++------ 5 files changed, 115 insertions(+), 69 deletions(-) -- 2.21.0