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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 46774C282C0 for ; Fri, 25 Jan 2019 05:13:22 +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 8D453218CD for ; Fri, 25 Jan 2019 05:13:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8D453218CD 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 43m6cH2hTBzDqMv for ; Fri, 25 Jan 2019 16:13:19 +1100 (AEDT) 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=vaibhav@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 43m6ZW6CyMzDqKJ for ; Fri, 25 Jan 2019 16:11:47 +1100 (AEDT) Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x0P59Q3a119056 for ; Fri, 25 Jan 2019 00:11:45 -0500 Received: from e06smtp04.uk.ibm.com (e06smtp04.uk.ibm.com [195.75.94.100]) by mx0b-001b2d01.pphosted.com with ESMTP id 2q7pm953wp-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 25 Jan 2019 00:11:45 -0500 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) Fri, 25 Jan 2019 05:11:41 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x0P5Bd7650921528 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 25 Jan 2019 05:11:40 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D20CB5205A; Fri, 25 Jan 2019 05:11:39 +0000 (GMT) Received: from vajain21.in.ibm.com (unknown [9.109.223.28]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id E473452050; Fri, 25 Jan 2019 05:11:37 +0000 (GMT) From: Vaibhav Jain To: linuxppc-dev@lists.ozlabs.org, Frederic Barrat Subject: [RFC PATCH 0/2] cxl: Add support for disabling CAPP when unloading CXL Date: Fri, 25 Jan 2019 10:41:29 +0530 X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 19012505-0016-0000-0000-0000024A2B6D X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19012505-0017-0000-0000-000032A4732A Message-Id: <20190125051131.29351-1-vaibhav@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-01-25_03:, , 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=768 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901250040 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: Philippe Bergheaud , Vaibhav Jain , Alastair D'Silva , Christophe Lombard , Andrew Donnellan Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Recent updates to OPAL have implemented necessary infrastructure [1] to disable CAPP and switch PHB back to PCIE mode during fast reset. This small patch-set uses the same OPAL infrastructure to force disable of CAPP when CXL module is unloaded via rmmod. References: [1]: https://lists.ozlabs.org/pipermail/skiboot/2019-January/013063.html Vaibhav Jain (2): powerpc/powernv: Add support for CXL mode switch that need PHB reset cxl: Force a CAPP reset when unloading CXL module arch/powerpc/platforms/powernv/pci-cxl.c | 71 +++++++++++++++++++++--- drivers/misc/cxl/cxl.h | 1 + drivers/misc/cxl/main.c | 3 + drivers/misc/cxl/pci.c | 25 ++++++++- 4 files changed, 91 insertions(+), 9 deletions(-) -- 2.20.1