From patchwork Thu Oct 22 11:11:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kirti Wankhede X-Patchwork-Id: 1386195 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=nvidia.com header.i=@nvidia.com header.a=rsa-sha256 header.s=n1 header.b=q2tB/inl; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4CH5Sm1sxyz9sT6 for ; Thu, 22 Oct 2020 22:57:12 +1100 (AEDT) Received: from localhost ([::1]:49322 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kVZDS-0005th-8H for incoming@patchwork.ozlabs.org; Thu, 22 Oct 2020 07:57:10 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40368) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVZ2V-0001EA-2h for qemu-devel@nongnu.org; Thu, 22 Oct 2020 07:45:54 -0400 Received: from hqnvemgate24.nvidia.com ([216.228.121.143]:14988) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kVZ1t-00078Q-Sh for qemu-devel@nongnu.org; Thu, 22 Oct 2020 07:45:50 -0400 Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, AES256-SHA) id ; Thu, 22 Oct 2020 04:43:38 -0700 Received: from HQMAIL111.nvidia.com (172.20.187.18) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Thu, 22 Oct 2020 11:45:03 +0000 Received: from kwankhede-dev.nvidia.com (10.124.1.5) by mail.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Thu, 22 Oct 2020 11:44:55 +0000 From: Kirti Wankhede To: , Subject: [PATCH v27 03/17] vfio: Add save and load functions for VFIO PCI devices Date: Thu, 22 Oct 2020 16:41:53 +0530 Message-ID: <1603365127-14202-4-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1603365127-14202-1-git-send-email-kwankhede@nvidia.com> References: <1603365127-14202-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1603367018; bh=vv3516jvHQTtEO9hj/RMJ+CgS6silq7so7DBWypgZ9c=; h=From:To:CC:Subject:Date:Message-ID:X-Mailer:In-Reply-To: References:X-NVConfidentiality:MIME-Version:Content-Type; b=q2tB/inlY/w2IP19hjuRmm+4N0KbdUIHg408tWP0gGniQVs8Zb9tCiEa9GG1n0hLO AeNX0UDRVU3Y4f01gHZdSs0uLZgwF9U3LO7MKSBW4HnC3BNyWYvKDiXyl/+IqCTz51 ACvkOOVTYGbxUohgkS9jFR7BH7/42sPCZOJ6XB+/F0ygi6V6M8cVYwRKeNaqJnRsnB kGPgIu2sSbIGmYeYyjR9mMT261LkCMP1repax8/CRkZNNZs73MgXC6IsVrJmH5J9tI 9VjyjEfXFobggoBTFmm6m0QSCReFEOagFFet9MFzsrQFCrQckkYtVafsDdcaby3C9s lVweLnGyFyLyg== Received-SPF: pass client-ip=216.228.121.143; envelope-from=kwankhede@nvidia.com; helo=hqnvemgate24.nvidia.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/22 07:44:48 X-ACL-Warn: Detected OS = Windows 7 or 8 [fuzzy] X-Spam_score_int: -70 X-Spam_score: -7.1 X-Spam_bar: ------- X-Spam_report: (-7.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: cohuck@redhat.com, zhi.wang.linux@gmail.com, aik@ozlabs.ru, Zhengxiao.zx@Alibaba-inc.com, shuangtai.tst@alibaba-inc.com, qemu-devel@nongnu.org, peterx@redhat.com, Kirti Wankhede , eauger@redhat.com, yi.l.liu@intel.com, quintela@redhat.com, ziye.yang@intel.com, armbru@redhat.com, mlevitsk@redhat.com, pasic@linux.ibm.com, felipe@nutanix.com, zhi.a.wang@intel.com, mcrossley@nvidia.com, kevin.tian@intel.com, yan.y.zhao@intel.com, dgilbert@redhat.com, changpeng.liu@intel.com, eskultet@redhat.com, Ken.Xue@amd.com, jonathan.davies@nutanix.com, pbonzini@redhat.com, dnigam@nvidia.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Added functions to save and restore PCI device specific data, specifically config space of PCI device. Signed-off-by: Kirti Wankhede Reviewed-by: Neo Jia --- hw/vfio/pci.c | 48 +++++++++++++++++++++++++++++++++++++++++++ include/hw/vfio/vfio-common.h | 2 ++ 2 files changed, 50 insertions(+) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index bffd5bfe3b78..1036a5332772 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -41,6 +41,7 @@ #include "trace.h" #include "qapi/error.h" #include "migration/blocker.h" +#include "migration/qemu-file.h" #define TYPE_VFIO_PCI_NOHOTPLUG "vfio-pci-nohotplug" @@ -2401,11 +2402,58 @@ static Object *vfio_pci_get_object(VFIODevice *vbasedev) return OBJECT(vdev); } +static bool vfio_msix_enabled(void *opaque, int version_id) +{ + PCIDevice *pdev = opaque; + + return msix_enabled(pdev); +} + +const VMStateDescription vmstate_vfio_pci_config = { + .name = "VFIOPCIDevice", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_PCI_DEVICE(pdev, VFIOPCIDevice), + VMSTATE_MSIX_TEST(pdev, VFIOPCIDevice, vfio_msix_enabled), + VMSTATE_END_OF_LIST() + } +}; + +static void vfio_pci_save_config(VFIODevice *vbasedev, QEMUFile *f) +{ + VFIOPCIDevice *vdev = container_of(vbasedev, VFIOPCIDevice, vbasedev); + + vmstate_save_state(f, &vmstate_vfio_pci_config, vdev, NULL); +} + +static int vfio_pci_load_config(VFIODevice *vbasedev, QEMUFile *f) +{ + VFIOPCIDevice *vdev = container_of(vbasedev, VFIOPCIDevice, vbasedev); + PCIDevice *pdev = &vdev->pdev; + int ret; + + ret = vmstate_load_state(f, &vmstate_vfio_pci_config, vdev, 1); + if (ret) { + return ret; + } + + if (msi_enabled(pdev)) { + vfio_msi_enable(vdev); + } else if (msix_enabled(pdev)) { + vfio_msix_enable(vdev); + } + + return ret; +} + static VFIODeviceOps vfio_pci_ops = { .vfio_compute_needs_reset = vfio_pci_compute_needs_reset, .vfio_hot_reset_multi = vfio_pci_hot_reset_multi, .vfio_eoi = vfio_intx_eoi, .vfio_get_object = vfio_pci_get_object, + .vfio_save_config = vfio_pci_save_config, + .vfio_load_config = vfio_pci_load_config, }; int vfio_populate_vga(VFIOPCIDevice *vdev, Error **errp) diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index fe99c36a693a..ba6169cd926e 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -120,6 +120,8 @@ struct VFIODeviceOps { int (*vfio_hot_reset_multi)(VFIODevice *vdev); void (*vfio_eoi)(VFIODevice *vdev); Object *(*vfio_get_object)(VFIODevice *vdev); + void (*vfio_save_config)(VFIODevice *vdev, QEMUFile *f); + int (*vfio_load_config)(VFIODevice *vdev, QEMUFile *f); }; typedef struct VFIOGroup {