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/*
* Vhost user blk PCI Bindings
*
* Copyright(C) 2017 Intel Corporation.
*
* Authors:
* Changpeng Liu <changpeng.liu@intel.com>
*
* Largely based on the "vhost-user-scsi.c" and "vhost-scsi.c" implemented by:
* Felipe Franciosi <felipe@nutanix.com>
* Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
* Nicholas Bellinger <nab@risingtidesystems.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "standard-headers/linux/virtio_pci.h"
#include "hw/virtio/virtio.h"
#include "hw/virtio/vhost-user-blk.h"
#include "hw/pci/pci.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/module.h"
#include "virtio-pci.h"
typedef struct VHostUserBlkPCI VHostUserBlkPCI;
/*
* vhost-user-blk-pci: This extends VirtioPCIProxy.
*/
#define TYPE_VHOST_USER_BLK_PCI "vhost-user-blk-pci-base"
#define VHOST_USER_BLK_PCI(obj) \
OBJECT_CHECK(VHostUserBlkPCI, (obj), TYPE_VHOST_USER_BLK_PCI)
struct VHostUserBlkPCI {
VirtIOPCIProxy parent_obj;
VHostUserBlk vdev;
};
static Property vhost_user_blk_pci_properties[] = {
DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
DEV_NVECTORS_UNSPECIFIED),
DEFINE_PROP_END_OF_LIST(),
};
static void vhost_user_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(vpci_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
if (dev->vdev.num_queues == VHOST_USER_BLK_AUTO_NUM_QUEUES) {
dev->vdev.num_queues = virtio_pci_optimal_num_queues(0);
}
if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
vpci_dev->nvectors = dev->vdev.num_queues + 1;
}
qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
}
static void vhost_user_blk_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);
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
device_class_set_props(dc, vhost_user_blk_pci_properties);
k->realize = vhost_user_blk_pci_realize;
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
}
static void vhost_user_blk_pci_instance_init(Object *obj)
{
VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_USER_BLK);
object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
"bootindex");
}
static const VirtioPCIDeviceTypeInfo vhost_user_blk_pci_info = {
.base_name = TYPE_VHOST_USER_BLK_PCI,
.generic_name = "vhost-user-blk-pci",
.transitional_name = "vhost-user-blk-pci-transitional",
.non_transitional_name = "vhost-user-blk-pci-non-transitional",
.instance_size = sizeof(VHostUserBlkPCI),
.instance_init = vhost_user_blk_pci_instance_init,
.class_init = vhost_user_blk_pci_class_init,
};
static void vhost_user_blk_pci_register(void)
{
virtio_pci_types_register(&vhost_user_blk_pci_info);
}
type_init(vhost_user_blk_pci_register)
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