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Tsirkin" , Alex Williamson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , John Levon , John Johnson , Elena Ufimtseva , Jagannathan Raman Subject: [PATCH 21/27] vfio-user: implement VFIO_USER_DEVICE_RESET Date: Thu, 15 May 2025 16:44:06 +0100 Message-ID: <20250515154413.210315-22-john.levon@nutanix.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250515154413.210315-1-john.levon@nutanix.com> References: <20250515154413.210315-1-john.levon@nutanix.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: AM8P190CA0010.EURP190.PROD.OUTLOOK.COM (2603:10a6:20b:219::15) To CH2PR02MB6760.namprd02.prod.outlook.com (2603:10b6:610:7f::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PR02MB6760:EE_|PH0PR02MB8470:EE_ X-MS-Office365-Filtering-Correlation-Id: 25a7c810-dabd-42b3-1ee2-08dd93c77a96 x-proofpoint-crosstenant: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|366016; 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envelope-from=john.levon@nutanix.com; helo=mx0a-002c1b01.pphosted.com X-Spam_score_int: -44 X-Spam_score: -4.5 X-Spam_bar: ---- X-Spam_report: (-4.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.686, 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_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Hook this call up to the legacy reset handler for vfio-user-pci. Originally-by: John Johnson Signed-off-by: Elena Ufimtseva Signed-off-by: Jagannathan Raman Signed-off-by: John Levon --- hw/vfio-user/device.h | 2 ++ hw/vfio-user/device.c | 12 ++++++++++++ hw/vfio-user/pci.c | 15 +++++++++++++++ 3 files changed, 29 insertions(+) diff --git a/hw/vfio-user/device.h b/hw/vfio-user/device.h index a5a2aa9ba6..25cd4c8a00 100644 --- a/hw/vfio-user/device.h +++ b/hw/vfio-user/device.h @@ -20,6 +20,8 @@ int vfio_user_get_device_info(VFIOUserProxy *proxy, struct vfio_device_info *info); +void vfio_user_device_reset(VFIOUserProxy *proxy); + extern VFIODeviceIOOps vfio_user_device_io_ops_sock; #endif /* VFIO_USER_DEVICE_H */ diff --git a/hw/vfio-user/device.c b/hw/vfio-user/device.c index 45b91d22f0..b37f7329a1 100644 --- a/hw/vfio-user/device.c +++ b/hw/vfio-user/device.c @@ -49,6 +49,18 @@ int vfio_user_get_device_info(VFIOUserProxy *proxy, return 0; } +void vfio_user_device_reset(VFIOUserProxy *proxy) +{ + VFIOUserHdr msg; + + vfio_user_request_msg(&msg, VFIO_USER_DEVICE_RESET, sizeof(msg), 0); + + vfio_user_send_wait(proxy, &msg, NULL, 0); + if (msg.flags & VFIO_USER_ERROR) { + error_printf("reset reply error %d\n", msg.error_reply); + } +} + static int vfio_user_get_region_info(VFIOUserProxy *proxy, struct vfio_region_info *info, VFIOUserFDs *fds) diff --git a/hw/vfio-user/pci.c b/hw/vfio-user/pci.c index a6921a8f2e..55cc811d3c 100644 --- a/hw/vfio-user/pci.c +++ b/hw/vfio-user/pci.c @@ -251,6 +251,20 @@ static void vfio_user_instance_finalize(Object *obj) } } +static void vfio_user_pci_reset(DeviceState *dev) +{ + VFIOPCIDevice *vdev = VFIO_PCI_BASE(dev); + VFIODevice *vbasedev = &vdev->vbasedev; + + vfio_pci_pre_reset(vdev); + + if (vbasedev->reset_works) { + vfio_user_device_reset(vbasedev->proxy); + } + + vfio_pci_post_reset(vdev); +} + static const Property vfio_user_pci_dev_properties[] = { DEFINE_PROP_UINT32("x-pci-vendor-id", VFIOPCIDevice, vendor_id, PCI_ANY_ID), @@ -269,6 +283,7 @@ static void vfio_user_pci_dev_class_init(ObjectClass *klass, const void *data) DeviceClass *dc = DEVICE_CLASS(klass); PCIDeviceClass *pdc = PCI_DEVICE_CLASS(klass); + device_class_set_legacy_reset(dc, vfio_user_pci_reset); device_class_set_props(dc, vfio_user_pci_dev_properties); dc->desc = "VFIO over socket PCI device assignment"; pdc->realize = vfio_user_pci_realize; -- 2.43.0