1 /* 2 * Vhost scsi PCI bindings 3 * 4 * Copyright IBM, Corp. 2011 5 * 6 * Authors: 7 * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> 8 * 9 * Changes for QEMU mainline + tcm_vhost kernel upstream: 10 * Nicholas Bellinger <nab@risingtidesystems.com> 11 * 12 * This work is licensed under the terms of the GNU LGPL, version 2 or later. 13 * See the COPYING.LIB file in the top-level directory. 14 * 15 */ 16 17 #include "qemu/osdep.h" 18 19 #include "standard-headers/linux/virtio_pci.h" 20 #include "hw/virtio/vhost-scsi.h" 21 #include "qapi/error.h" 22 #include "qemu/module.h" 23 #include "virtio-pci.h" 24 25 typedef struct VHostSCSIPCI VHostSCSIPCI; 26 27 /* 28 * vhost-scsi-pci: This extends VirtioPCIProxy. 29 */ 30 #define TYPE_VHOST_SCSI_PCI "vhost-scsi-pci-base" 31 #define VHOST_SCSI_PCI(obj) \ 32 OBJECT_CHECK(VHostSCSIPCI, (obj), TYPE_VHOST_SCSI_PCI) 33 34 struct VHostSCSIPCI { 35 VirtIOPCIProxy parent_obj; 36 VHostSCSI vdev; 37 }; 38 39 static Property vhost_scsi_pci_properties[] = { 40 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 41 DEV_NVECTORS_UNSPECIFIED), 42 DEFINE_PROP_END_OF_LIST(), 43 }; 44 45 static void vhost_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) 46 { 47 VHostSCSIPCI *dev = VHOST_SCSI_PCI(vpci_dev); 48 DeviceState *vdev = DEVICE(&dev->vdev); 49 VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(vdev); 50 51 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { 52 vpci_dev->nvectors = vs->conf.num_queues + 3; 53 } 54 55 qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus)); 56 object_property_set_bool(OBJECT(vdev), true, "realized", errp); 57 } 58 59 static void vhost_scsi_pci_class_init(ObjectClass *klass, void *data) 60 { 61 DeviceClass *dc = DEVICE_CLASS(klass); 62 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); 63 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); 64 k->realize = vhost_scsi_pci_realize; 65 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); 66 dc->props = vhost_scsi_pci_properties; 67 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; 68 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; 69 pcidev_k->revision = 0x00; 70 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; 71 } 72 73 static void vhost_scsi_pci_instance_init(Object *obj) 74 { 75 VHostSCSIPCI *dev = VHOST_SCSI_PCI(obj); 76 77 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), 78 TYPE_VHOST_SCSI); 79 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), 80 "bootindex", &error_abort); 81 } 82 83 static const VirtioPCIDeviceTypeInfo vhost_scsi_pci_info = { 84 .base_name = TYPE_VHOST_SCSI_PCI, 85 .generic_name = "vhost-scsi-pci", 86 .transitional_name = "vhost-scsi-pci-transitional", 87 .non_transitional_name = "vhost-scsi-pci-non-transitional", 88 .instance_size = sizeof(VHostSCSIPCI), 89 .instance_init = vhost_scsi_pci_instance_init, 90 .class_init = vhost_scsi_pci_class_init, 91 }; 92 93 static void vhost_scsi_pci_register(void) 94 { 95 virtio_pci_types_register(&vhost_scsi_pci_info); 96 } 97 98 type_init(vhost_scsi_pci_register) 99