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_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 DD162C282DD for ; Thu, 23 May 2019 12:25:50 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 BA15721019 for ; Thu, 23 May 2019 12:25:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BA15721019 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=iommu-bounces@lists.linux-foundation.org Received: from mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 3C65CC03; Thu, 23 May 2019 12:25:38 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 984FA9EE for ; Thu, 23 May 2019 12:25:36 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id 2576984F for ; Thu, 23 May 2019 12:25:35 +0000 (UTC) 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 x4NC99WV004662 for ; Thu, 23 May 2019 08:25:35 -0400 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2snsy1vm66-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 23 May 2019 08:25:35 -0400 Received: from localhost by e06smtp07.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) Thu, 23 May 2019 13:25:29 +0100 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x4NCPRXu51380378 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 23 May 2019 12:25:27 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7463052052; Thu, 23 May 2019 12:25:27 +0000 (GMT) Received: from morel-ThinkPad-W530.boeblingen.de.ibm.com (unknown [9.152.222.40]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id E6A8852059; Thu, 23 May 2019 12:25:26 +0000 (GMT) From: Pierre Morel To: sebott@linux.vnet.ibm.com Subject: [PATCH v3 0/3] Retrieving zPCI specific info with VFIO Date: Thu, 23 May 2019 14:25:23 +0200 X-Mailer: git-send-email 2.7.4 X-TM-AS-GCONF: 00 x-cbid: 19052312-0028-0000-0000-00000370B03F X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19052312-0029-0000-0000-00002430625D Message-Id: <1558614326-24711-1-git-send-email-pmorel@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-05-23_10:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=886 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905230087 Cc: linux-s390@vger.kernel.org, pasic@linux.vnet.ibm.com, alex.williamson@redhat.com, kvm@vger.kernel.org, heiko.carstens@de.ibm.com, walling@linux.ibm.com, linux-kernel@vger.kernel.org, borntraeger@de.ibm.com, iommu@lists.linux-foundation.org, schwidefsky@de.ibm.com, robin.murphy@arm.com, gerald.schaefer@de.ibm.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org We define a new configuration entry for VFIO/PCI, VFIO_PCI_ZDEV to configure access to a zPCI region dedicated for retrieving zPCI features. When the VFIO_PCI_ZDEV feature is configured we initialize a new device region, VFIO_REGION_SUBTYPE_ZDEV_CLP, to hold the information from the ZPCI device the userland needs to give to a guest driving the zPCI function. Note that in the current state we do not use the CLP instructions to access the firmware but get the information directly from the zdev device. -This means that the patch 1, "s390: pci: Exporting access to CLP PCI function and PCI group" is not used and can be let out of this series without denying the good working of the other patches. - But we will need this later, eventually in the next iteration to retrieve values not being saved inside the zdev structure. like maxstbl and the PCI supported version To share the code with arch/s390/pci/pci_clp.c the original functions in pci_clp.c to query PCI functions and PCI functions group are modified so that they can be exported. A new function clp_query_pci() replaces clp_query_pci_fn() and the previous calls to clp_query_pci_fn() and clp_query_pci_fngrp() are replaced with calls to zdev_query_pci_fn() and zdev_query_pci_fngrp() using a zdev pointer as argument. Pierre Morel (3): s390: pci: Exporting access to CLP PCI function and PCI group vfio: zpci: defining the VFIO headers vfio: pci: Using a device region to retrieve zPCI information arch/s390/include/asm/pci.h | 3 ++ arch/s390/pci/pci_clp.c | 70 ++++++++++++++++--------------- drivers/vfio/pci/Kconfig | 7 ++++ drivers/vfio/pci/Makefile | 1 + drivers/vfio/pci/vfio_pci.c | 9 ++++ drivers/vfio/pci/vfio_pci_private.h | 10 +++++ drivers/vfio/pci/vfio_pci_zdev.c | 83 +++++++++++++++++++++++++++++++++++++ include/uapi/linux/vfio.h | 4 ++ include/uapi/linux/vfio_zdev.h | 34 +++++++++++++++ 9 files changed, 187 insertions(+), 34 deletions(-) create mode 100644 drivers/vfio/pci/vfio_pci_zdev.c create mode 100644 include/uapi/linux/vfio_zdev.h -- 2.7.4 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu