1 /* 2 * Vhost-user filesystem virtio device PCI glue 3 * 4 * Copyright 2018-2019 Red Hat, Inc. 5 * 6 * Authors: 7 * Dr. David Alan Gilbert <dgilbert@redhat.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or 10 * (at your option) any later version. See the COPYING file in the 11 * top-level directory. 12 */ 13 14 #include "qemu/osdep.h" 15 #include "hw/qdev-properties.h" 16 #include "hw/virtio/vhost-user-fs.h" 17 #include "virtio-pci.h" 18 19 struct VHostUserFSPCI { 20 VirtIOPCIProxy parent_obj; 21 VHostUserFS vdev; 22 }; 23 24 typedef struct VHostUserFSPCI VHostUserFSPCI; 25 26 #define TYPE_VHOST_USER_FS_PCI "vhost-user-fs-pci-base" 27 28 #define VHOST_USER_FS_PCI(obj) \ 29 OBJECT_CHECK(VHostUserFSPCI, (obj), TYPE_VHOST_USER_FS_PCI) 30 31 static Property vhost_user_fs_pci_properties[] = { 32 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 33 DEV_NVECTORS_UNSPECIFIED), 34 DEFINE_PROP_END_OF_LIST(), 35 }; 36 37 static void vhost_user_fs_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 38 { 39 VHostUserFSPCI *dev = VHOST_USER_FS_PCI(vpci_dev); 40 DeviceState *vdev = DEVICE(&dev->vdev); 41 42 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { 43 /* Also reserve config change and hiprio queue vectors */ 44 vpci_dev->nvectors = dev->vdev.conf.num_request_queues + 2; 45 } 46 47 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); 48 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 49 } 50 51 static void vhost_user_fs_pci_class_init(ObjectClass *klass, void *data) 52 { 53 DeviceClass *dc = DEVICE_CLASS(klass); 54 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 55 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 56 k->realize = vhost_user_fs_pci_realize; 57 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 58 device_class_set_props(dc, vhost_user_fs_pci_properties); 59 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 60 pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */ 61 pcidev_k->revision = 0x00; 62 pcidev_k->class_id = PCI_CLASS_STORAGE_OTHER; 63 } 64 65 static void vhost_user_fs_pci_instance_init(Object *obj) 66 { 67 VHostUserFSPCI *dev = VHOST_USER_FS_PCI(obj); 68 69 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 70 TYPE_VHOST_USER_FS); 71 } 72 73 static const VirtioPCIDeviceTypeInfo vhost_user_fs_pci_info = { 74 .base_name = TYPE_VHOST_USER_FS_PCI, 75 .non_transitional_name = "vhost-user-fs-pci", 76 .instance_size = sizeof(VHostUserFSPCI), 77 .instance_init = vhost_user_fs_pci_instance_init, 78 .class_init = vhost_user_fs_pci_class_init, 79 }; 80 81 static void vhost_user_fs_pci_register(void) 82 { 83 virtio_pci_types_register(&vhost_user_fs_pci_info); 84 } 85 86 type_init(vhost_user_fs_pci_register); 87