hw/arm/raspi: fix CPRMAN base address
[qemu.git] / hw / virtio / vhost-user-blk-pci.c
1 /*
2 * Vhost user blk PCI Bindings
3 *
4 * Copyright(C) 2017 Intel Corporation.
5 *
6 * Authors:
7 * Changpeng Liu <changpeng.liu@intel.com>
8 *
9 * Largely based on the "vhost-user-scsi.c" and "vhost-scsi.c" implemented by:
10 * Felipe Franciosi <felipe@nutanix.com>
11 * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
12 * Nicholas Bellinger <nab@risingtidesystems.com>
13 *
14 * This work is licensed under the terms of the GNU LGPL, version 2 or later.
15 * See the COPYING.LIB file in the top-level directory.
16 *
17 */
18
19 #include "qemu/osdep.h"
20
21 #include "standard-headers/linux/virtio_pci.h"
22 #include "hw/virtio/virtio.h"
23 #include "hw/virtio/vhost-user-blk.h"
24 #include "hw/pci/pci.h"
25 #include "hw/qdev-properties.h"
26 #include "qapi/error.h"
27 #include "qemu/error-report.h"
28 #include "qemu/module.h"
29 #include "virtio-pci.h"
30 #include "qom/object.h"
31
32 typedef struct VHostUserBlkPCI VHostUserBlkPCI;
33
34 /*
35 * vhost-user-blk-pci: This extends VirtioPCIProxy.
36 */
37 #define TYPE_VHOST_USER_BLK_PCI "vhost-user-blk-pci-base"
38 DECLARE_INSTANCE_CHECKER(VHostUserBlkPCI, VHOST_USER_BLK_PCI,
39 TYPE_VHOST_USER_BLK_PCI)
40
41 struct VHostUserBlkPCI {
42 VirtIOPCIProxy parent_obj;
43 VHostUserBlk vdev;
44 };
45
46 static Property vhost_user_blk_pci_properties[] = {
47 DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
48 DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
49 DEV_NVECTORS_UNSPECIFIED),
50 DEFINE_PROP_END_OF_LIST(),
51 };
52
53 static void vhost_user_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
54 {
55 VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(vpci_dev);
56 DeviceState *vdev = DEVICE(&dev->vdev);
57
58 if (dev->vdev.num_queues == VHOST_USER_BLK_AUTO_NUM_QUEUES) {
59 dev->vdev.num_queues = virtio_pci_optimal_num_queues(0);
60 }
61
62 if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
63 vpci_dev->nvectors = dev->vdev.num_queues + 1;
64 }
65
66 qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
67 }
68
69 static void vhost_user_blk_pci_class_init(ObjectClass *klass, void *data)
70 {
71 DeviceClass *dc = DEVICE_CLASS(klass);
72 VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
73 PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
74
75 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
76 device_class_set_props(dc, vhost_user_blk_pci_properties);
77 k->realize = vhost_user_blk_pci_realize;
78 pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
79 pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
80 pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
81 pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
82 }
83
84 static void vhost_user_blk_pci_instance_init(Object *obj)
85 {
86 VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(obj);
87
88 virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
89 TYPE_VHOST_USER_BLK);
90 object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
91 "bootindex");
92 }
93
94 static const VirtioPCIDeviceTypeInfo vhost_user_blk_pci_info = {
95 .base_name = TYPE_VHOST_USER_BLK_PCI,
96 .generic_name = "vhost-user-blk-pci",
97 .transitional_name = "vhost-user-blk-pci-transitional",
98 .non_transitional_name = "vhost-user-blk-pci-non-transitional",
99 .instance_size = sizeof(VHostUserBlkPCI),
100 .instance_init = vhost_user_blk_pci_instance_init,
101 .class_init = vhost_user_blk_pci_class_init,
102 };
103
104 static void vhost_user_blk_pci_register(void)
105 {
106 virtio_pci_types_register(&vhost_user_blk_pci_info);
107 }
108
109 type_init(vhost_user_blk_pci_register)