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 C7849C433FE for ; Fri, 4 Feb 2022 21:16:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243984AbiBDVQq (ORCPT ); Fri, 4 Feb 2022 16:16:46 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:17462 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242519AbiBDVQS (ORCPT ); Fri, 4 Feb 2022 16:16:18 -0500 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 214JT7YM001661; Fri, 4 Feb 2022 21:16:18 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=CZzB9rRtEpapWdmcf1wnwL9Cq8Gl2MEwRRLww4IebgY=; b=EYGDvdvWy7D1yxlysaXWODy3WSC0GOYhtvVVg/QOyYK5yz0YY2orob9gBSOH6FrrX7of nZb4w+Dj6PixzfsVkql4gKeBFJhvsi5p3J0onakY3+TJQRBLlEEwSO4rh07FgLQ+tEsk ojRD65ynZXbvSdHIIPi9N0U/7ZimYm+Rb9aBR9LQLKM/RtHakgim/RDDyvRwl4MhxA6L kcJ07ekUfATToVmEkTgxTFjKfFreVbl34wFOyvg83+jQqU2UZcCYVX6yxrns11uUBRIR E7VnZoer6iSl8SDVYduasFxrBOU5/7kObHrOItdSOl9qXUQ7meLduYML7sA9bsP0VsWM lQ== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 3e0qx3frkt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 04 Feb 2022 21:16:18 +0000 Received: from m0098399.ppops.net (m0098399.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 214KxUOt025295; Fri, 4 Feb 2022 21:16:17 GMT Received: from ppma03dal.us.ibm.com (b.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.11]) by mx0a-001b2d01.pphosted.com with ESMTP id 3e0qx3frkg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 04 Feb 2022 21:16:17 +0000 Received: from pps.filterd (ppma03dal.us.ibm.com [127.0.0.1]) by ppma03dal.us.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 214LCaPr021810; Fri, 4 Feb 2022 21:16:16 GMT Received: from b03cxnp08028.gho.boulder.ibm.com (b03cxnp08028.gho.boulder.ibm.com [9.17.130.20]) by ppma03dal.us.ibm.com with ESMTP id 3e0r0k7guy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 04 Feb 2022 21:16:16 +0000 Received: from b03ledav002.gho.boulder.ibm.com (b03ledav002.gho.boulder.ibm.com [9.17.130.233]) by b03cxnp08028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 214LGDQc37617922 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 4 Feb 2022 21:16:13 GMT Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7A589136060; Fri, 4 Feb 2022 21:16:13 +0000 (GMT) Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B9DB3136053; Fri, 4 Feb 2022 21:16:11 +0000 (GMT) Received: from li-c92d2ccc-254b-11b2-a85c-a700b5bfb098.ibm.com.com (unknown [9.211.82.52]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP; Fri, 4 Feb 2022 21:16:11 +0000 (GMT) From: Matthew Rosato To: linux-s390@vger.kernel.org Cc: alex.williamson@redhat.com, cohuck@redhat.com, schnelle@linux.ibm.com, farman@linux.ibm.com, pmorel@linux.ibm.com, borntraeger@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com, frankja@linux.ibm.com, david@redhat.com, imbrenda@linux.ibm.com, vneethv@linux.ibm.com, oberpar@linux.ibm.com, freude@linux.ibm.com, thuth@redhat.com, pasic@linux.ibm.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 15/30] KVM: s390: pci: add basic kvm_zdev structure Date: Fri, 4 Feb 2022 16:15:21 -0500 Message-Id: <20220204211536.321475-16-mjrosato@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220204211536.321475-1-mjrosato@linux.ibm.com> References: <20220204211536.321475-1-mjrosato@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: PzaE6hUkSK6BIFEFrJ90gEwpb4corLdY X-Proofpoint-GUID: 6C1FNCFQQRVxB0er_EjlFNQZRI8Bs22C X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-02-04_07,2022-02-03_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 suspectscore=0 mlxlogscore=943 priorityscore=1501 malwarescore=0 bulkscore=0 impostorscore=0 spamscore=0 phishscore=0 adultscore=0 clxscore=1015 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2202040117 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This structure will be used to carry kvm passthrough information related to zPCI devices. Reviewed-by: Pierre Morel Signed-off-by: Matthew Rosato --- arch/s390/include/asm/kvm_pci.h | 27 +++++++++++++++++++++++ arch/s390/include/asm/pci.h | 3 +++ arch/s390/kvm/Makefile | 1 + arch/s390/kvm/pci.c | 38 +++++++++++++++++++++++++++++++++ 4 files changed, 69 insertions(+) create mode 100644 arch/s390/include/asm/kvm_pci.h create mode 100644 arch/s390/kvm/pci.c diff --git a/arch/s390/include/asm/kvm_pci.h b/arch/s390/include/asm/kvm_pci.h new file mode 100644 index 000000000000..ef10f9e46e37 --- /dev/null +++ b/arch/s390/include/asm/kvm_pci.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * KVM PCI Passthrough for virtual machines on s390 + * + * Copyright IBM Corp. 2021 + * + * Author(s): Matthew Rosato + */ + +#ifndef ASM_KVM_PCI_H +#define ASM_KVM_PCI_H + +#include +#include +#include +#include +#include + +struct kvm_zdev { + struct zpci_dev *zdev; + struct kvm *kvm; +}; + +int kvm_s390_pci_dev_open(struct zpci_dev *zdev); +void kvm_s390_pci_dev_release(struct zpci_dev *zdev); + +#endif /* ASM_KVM_PCI_H */ diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index e8a3fd5bc169..4faff673078b 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -97,6 +97,7 @@ struct zpci_bar_struct { }; struct s390_domain; +struct kvm_zdev; #define ZPCI_FUNCTIONS_PER_BUS 256 struct zpci_bus { @@ -190,6 +191,8 @@ struct zpci_dev { struct dentry *debugfs_dev; struct s390_domain *s390_domain; /* s390 IOMMU domain data */ + + struct kvm_zdev *kzdev; /* passthrough data */ }; static inline bool zdev_enabled(struct zpci_dev *zdev) diff --git a/arch/s390/kvm/Makefile b/arch/s390/kvm/Makefile index 26f4a74e5ce4..b8263a160df8 100644 --- a/arch/s390/kvm/Makefile +++ b/arch/s390/kvm/Makefile @@ -10,4 +10,5 @@ ccflags-y := -Ivirt/kvm -Iarch/s390/kvm kvm-y += kvm-s390.o intercept.o interrupt.o priv.o sigp.o kvm-y += diag.o gaccess.o guestdbg.o vsie.o pv.o +kvm-$(CONFIG_VFIO_PCI_ZDEV) += pci.o obj-$(CONFIG_KVM) += kvm.o diff --git a/arch/s390/kvm/pci.c b/arch/s390/kvm/pci.c new file mode 100644 index 000000000000..bc1b7a564e55 --- /dev/null +++ b/arch/s390/kvm/pci.c @@ -0,0 +1,38 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * s390 kvm PCI passthrough support + * + * Copyright IBM Corp. 2021 + * + * Author(s): Matthew Rosato + */ + +#include +#include +#include + +int kvm_s390_pci_dev_open(struct zpci_dev *zdev) +{ + struct kvm_zdev *kzdev; + + kzdev = kzalloc(sizeof(struct kvm_zdev), GFP_KERNEL); + if (!kzdev) + return -ENOMEM; + + kzdev->zdev = zdev; + zdev->kzdev = kzdev; + + return 0; +} +EXPORT_SYMBOL_GPL(kvm_s390_pci_dev_open); + +void kvm_s390_pci_dev_release(struct zpci_dev *zdev) +{ + struct kvm_zdev *kzdev; + + kzdev = zdev->kzdev; + WARN_ON(kzdev->zdev != zdev); + zdev->kzdev = 0; + kfree(kzdev); +} +EXPORT_SYMBOL_GPL(kvm_s390_pci_dev_release); -- 2.27.0