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Fri, 25 Mar 2022 19:20:29 +0000 From: Jagannathan Raman To: qemu-devel@nongnu.org Subject: [PATCH v7 16/17] vfio-user: handle reset of remote device Date: Fri, 25 Mar 2022 15:19:45 -0400 Message-Id: X-Mailer: git-send-email 2.20.1 In-Reply-To: References: X-ClientProxiedBy: SN6PR2101CA0024.namprd21.prod.outlook.com (2603:10b6:805:106::34) To MN2PR10MB4013.namprd10.prod.outlook.com (2603:10b6:208:185::25) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ee653491-bd62-429e-568b-08da0e9485d4 X-MS-TrafficTypeDiagnostic: BN8PR10MB3729:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; 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envelope-from=jag.raman@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: eduardo@habkost.net, elena.ufimtseva@oracle.com, john.g.johnson@oracle.com, berrange@redhat.com, bleal@redhat.com, john.levon@nutanix.com, mst@redhat.com, armbru@redhat.com, quintela@redhat.com, f4bug@amsat.org, alex.williamson@redhat.com, kanth.ghatraju@oracle.com, stefanha@redhat.com, thanos.makatos@nutanix.com, pbonzini@redhat.com, jag.raman@oracle.com, eblake@redhat.com, dgilbert@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Adds handler to reset a remote device Signed-off-by: Elena Ufimtseva Signed-off-by: John G Johnson Signed-off-by: Jagannathan Raman Reviewed-by: Stefan Hajnoczi --- hw/remote/vfio-user-obj.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/hw/remote/vfio-user-obj.c b/hw/remote/vfio-user-obj.c index 19d075a9dd..65e56d39fe 100644 --- a/hw/remote/vfio-user-obj.c +++ b/hw/remote/vfio-user-obj.c @@ -581,6 +581,20 @@ void vfu_object_set_bus_irq(PCIBus *pci_bus) pci_bus_irqs(pci_bus, vfu_object_set_irq, vfu_object_map_irq, pci_bus, 1); } +static int vfu_object_device_reset(vfu_ctx_t *vfu_ctx, vfu_reset_type_t type) +{ + VfuObject *o = vfu_get_private(vfu_ctx); + + /* vfu_object_ctx_run() handles lost connection */ + if (type == VFU_RESET_LOST_CONN) { + return 0; + } + + qdev_reset_all(DEVICE(o->pci_dev)); + + return 0; +} + /* * TYPE_VFU_OBJECT depends on the availability of the 'socket' and 'device' * properties. It also depends on devices instantiated in QEMU. These @@ -686,6 +700,12 @@ static void vfu_object_init_ctx(VfuObject *o, Error **errp) goto fail; } + ret = vfu_setup_device_reset_cb(o->vfu_ctx, &vfu_object_device_reset); + if (ret < 0) { + error_setg(errp, "vfu: Failed to setup reset callback"); + goto fail; + } + ret = vfu_realize_ctx(o->vfu_ctx); if (ret < 0) { error_setg(errp, "vfu: Failed to realize device %s- %s",