projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 7dc76896 JQ |
1 | /* |
| 2 | * Vhost scsi PCI bindings | |
| 3 | * | |
| 4 | * Copyright IBM, Corp. 2011 | |
| 5 | * | |
| 6 | * Authors: | |
| 7 | * Stefan Hajnoczi <[email protected]> | |
| 8 | * | |
| 9 | * Changes for QEMU mainline + tcm_vhost kernel upstream: | |
| 10 | * Nicholas Bellinger <[email protected]> | |
| 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" | |
| 0b8fa32f | 22 | #include "qemu/module.h" |
| 7dc76896 JQ |
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) |