110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
|
/*
|
||
|
|
* 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 "hw/virtio/virtio-pci.h"
|
||
|
|
#include "qom/object.h"
|
||
|
|
|
||
|
|
typedef struct VHostUserBlkPCI VHostUserBlkPCI;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* vhost-user-blk-pci: This extends VirtioPCIProxy.
|
||
|
|
*/
|
||
|
|
#define TYPE_VHOST_USER_BLK_PCI "vhost-user-blk-pci-base"
|
||
|
|
DECLARE_INSTANCE_CHECKER(VHostUserBlkPCI, VHOST_USER_BLK_PCI,
|
||
|
|
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)
|