1 /* 2 * Vhost user scsi PCI Bindings 3 * 4 * Copyright (c) 2016 Nutanix Inc. All rights reserved. 5 * 6 * Author: 7 * Felipe Franciosi <felipe@nutanix.com> 8 * 9 * This work is largely based on the "vhost-scsi" implementation by: 10 * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> 11 * Nicholas Bellinger <nab@risingtidesystems.com> 12 * 13 * This work is licensed under the terms of the GNU LGPL, version 2 or later. 14 * See the COPYING.LIB file in the top-level directory. 15 * 16 */ 17 18 #include "qemu/osdep.h" 19 20 #include "standard-headers/linux/virtio_pci.h" 21 #include "hw/virtio/vhost-user-scsi.h" 22 #include "hw/virtio/virtio.h" 23 #include "hw/virtio/virtio-scsi.h" 24 #include "hw/pci/pci.h" 25 #include "hw/qdev-properties.h" 26 #include "qapi/error.h" 27 #include "qemu/error-report.h" 28 #include "qemu/module.h" 29 #include "hw/pci/msi.h" 30 #include "hw/pci/msix.h" 31 #include "hw/loader.h" 32 #include "sysemu/kvm.h" 33 #include "virtio-pci.h" 34 35 typedef struct VHostUserSCSIPCI VHostUserSCSIPCI; 36 37 #define TYPE_VHOST_USER_SCSI_PCI "vhost-user-scsi-pci-base" 38 #define VHOST_USER_SCSI_PCI(obj) \ 39 OBJECT_CHECK(VHostUserSCSIPCI, (obj), TYPE_VHOST_USER_SCSI_PCI) 40 41 struct VHostUserSCSIPCI { 42 VirtIOPCIProxy parent_obj; 43 VHostUserSCSI vdev; 44 }; 45 46 static Property vhost_user_scsi_pci_properties[] = { 47 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 48 DEV_NVECTORS_UNSPECIFIED), 49 DEFINE_PROP_END_OF_LIST(), 50 }; 51 52 static void vhost_user_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 53 { 54 VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(vpci_dev); 55 DeviceState *vdev = DEVICE(&dev->vdev); 56 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); 57 58 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { 59 vpci_dev->nvectors = vs->conf.num_queues + 3; 60 } 61 62 qdev_realize(vdev, BUS(&vpci_dev->bus), errp); 63 } 64 65 static void vhost_user_scsi_pci_class_init(ObjectClass *klass, void *data) 66 { 67 DeviceClass *dc = DEVICE_CLASS(klass); 68 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 69 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 70 k->realize = vhost_user_scsi_pci_realize; 71 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 72 device_class_set_props(dc, vhost_user_scsi_pci_properties); 73 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 74 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; 75 pcidev_k->revision = 0x00; 76 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; 77 } 78 79 static void vhost_user_scsi_pci_instance_init(Object *obj) 80 { 81 VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(obj); 82 83 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 84 TYPE_VHOST_USER_SCSI); 85 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 86 "bootindex"); 87 } 88 89 static const VirtioPCIDeviceTypeInfo vhost_user_scsi_pci_info = { 90 .base_name = TYPE_VHOST_USER_SCSI_PCI, 91 .generic_name = "vhost-user-scsi-pci", 92 .transitional_name = "vhost-user-scsi-pci-transitional", 93 .non_transitional_name = "vhost-user-scsi-pci-non-transitional", 94 .instance_size = sizeof(VHostUserSCSIPCI), 95 .instance_init = vhost_user_scsi_pci_instance_init, 96 .class_init = vhost_user_scsi_pci_class_init, 97 }; 98 99 static void vhost_user_scsi_pci_register(void) 100 { 101 virtio_pci_types_register(&vhost_user_scsi_pci_info); 102 } 103 104 type_init(vhost_user_scsi_pci_register) 105