diff options
Diffstat (limited to 'hw/virtio/virtio-scsi-pci.c')
| -rw-r--r-- | hw/virtio/virtio-scsi-pci.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/hw/virtio/virtio-scsi-pci.c b/hw/virtio/virtio-scsi-pci.c new file mode 100644 index 0000000000..e8e3442f38 --- /dev/null +++ b/hw/virtio/virtio-scsi-pci.c @@ -0,0 +1,114 @@ +/* + * Virtio scsi PCI Bindings + * + * Copyright IBM, Corp. 2007 + * Copyright (c) 2009 CodeSourcery + * + * Authors: + * Anthony Liguori <aliguori@us.ibm.com> + * Paul Brook <paul@codesourcery.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + */ + +#include "qemu/osdep.h" + +#include "hw/qdev-properties.h" +#include "hw/virtio/virtio-scsi.h" +#include "qemu/module.h" +#include "hw/virtio/virtio-pci.h" +#include "qom/object.h" + +typedef struct VirtIOSCSIPCI VirtIOSCSIPCI; + +/* + * virtio-scsi-pci: This extends VirtioPCIProxy. + */ +#define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci-base" +DECLARE_INSTANCE_CHECKER(VirtIOSCSIPCI, VIRTIO_SCSI_PCI, + TYPE_VIRTIO_SCSI_PCI) + +struct VirtIOSCSIPCI { + VirtIOPCIProxy parent_obj; + VirtIOSCSI vdev; +}; + +static Property virtio_scsi_pci_properties[] = { + DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, + VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true), + DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, + DEV_NVECTORS_UNSPECIFIED), + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) +{ + VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev); + DeviceState *vdev = DEVICE(&dev->vdev); + DeviceState *proxy = DEVICE(vpci_dev); + VirtIOSCSIConf *conf = &dev->vdev.parent_obj.conf; + char *bus_name; + + if (conf->num_queues == VIRTIO_SCSI_AUTO_NUM_QUEUES) { + conf->num_queues = + virtio_pci_optimal_num_queues(VIRTIO_SCSI_VQ_NUM_FIXED); + } + + if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { + vpci_dev->nvectors = conf->num_queues + VIRTIO_SCSI_VQ_NUM_FIXED + 1; + } + + /* + * For command line compatibility, this sets the virtio-scsi-device bus + * name as before. + */ + if (proxy->id) { + bus_name = g_strdup_printf("%s.0", proxy->id); + virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name); + g_free(bus_name); + } + + qdev_realize(vdev, BUS(&vpci_dev->bus), errp); +} + +static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); + PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); + + k->realize = virtio_scsi_pci_realize; + set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); + device_class_set_props(dc, virtio_scsi_pci_properties); + pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; + pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; + pcidev_k->revision = 0x00; + pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; +} + +static void virtio_scsi_pci_instance_init(Object *obj) +{ + VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj); + + virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), + TYPE_VIRTIO_SCSI); +} + +static const VirtioPCIDeviceTypeInfo virtio_scsi_pci_info = { + .base_name = TYPE_VIRTIO_SCSI_PCI, + .generic_name = "virtio-scsi-pci", + .transitional_name = "virtio-scsi-pci-transitional", + .non_transitional_name = "virtio-scsi-pci-non-transitional", + .instance_size = sizeof(VirtIOSCSIPCI), + .instance_init = virtio_scsi_pci_instance_init, + .class_init = virtio_scsi_pci_class_init, +}; + +static void virtio_scsi_pci_register(void) +{ + virtio_pci_types_register(&virtio_scsi_pci_info); +} + +type_init(virtio_scsi_pci_register) |