projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 693510dd JQ |
1 | /* |
| 2 | * Vhost user scsi PCI Bindings | |
| 3 | * | |
| 4 | * Copyright (c) 2016 Nutanix Inc. All rights reserved. | |
| 5 | * | |
| 6 | * Author: | |
| 7 | * Felipe Franciosi <felipe@nutanix.com> | |
| 8 | * | |
| 9 | * This work is largely based on the "vhost-scsi" implementation by: | |
| 10 | * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | |
| 11 | * Nicholas Bellinger <nab@risingtidesystems.com> | |
| 12 | * | |
| 13 | * This work is licensed under the terms of the GNU LGPL, version 2 or later. | |
| 14 | * See the COPYING.LIB file in the top-level directory. | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| 18 | #include "qemu/osdep.h" | |
| 19 | ||
| 20 | #include "standard-headers/linux/virtio_pci.h" | |
| 21 | #include "hw/virtio/vhost-user-scsi.h" | |
| 22 | #include "hw/virtio/virtio.h" | |
| 23 | #include "hw/virtio/virtio-scsi.h" | |
| 24 | #include "hw/pci/pci.h" | |
| a27bd6c7 | 25 | #include "hw/qdev-properties.h" |
| 693510dd JQ |
26 | #include "qapi/error.h" |
| 27 | #include "qemu/error-report.h" | |
| 0b8fa32f | 28 | #include "qemu/module.h" |
| 693510dd JQ |
29 | #include "hw/pci/msi.h" |
| 30 | #include "hw/pci/msix.h" | |
| 31 | #include "hw/loader.h" | |
| 32 | #include "sysemu/kvm.h" | |
| 33 | #include "virtio-pci.h" | |
| db1015e9 | 34 | #include "qom/object.h" |
| 693510dd JQ |
35 | |
| 36 | typedef struct VHostUserSCSIPCI VHostUserSCSIPCI; | |
| 37 | ||
| 38 | #define TYPE_VHOST_USER_SCSI_PCI "vhost-user-scsi-pci-base" | |
| 8110fa1d EH |
39 | DECLARE_INSTANCE_CHECKER(VHostUserSCSIPCI, VHOST_USER_SCSI_PCI, |
| 40 | TYPE_VHOST_USER_SCSI_PCI) | |
| 693510dd JQ |
41 | |
| 42 | struct VHostUserSCSIPCI { | |
| 43 | VirtIOPCIProxy parent_obj; | |
| 44 | VHostUserSCSI vdev; | |
| 45 | }; | |
| 46 | ||
| 47 | static Property vhost_user_scsi_pci_properties[] = { | |
| 48 | DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, | |
| 49 | DEV_NVECTORS_UNSPECIFIED), | |
| 50 | DEFINE_PROP_END_OF_LIST(), | |
| 51 | }; | |
| 52 | ||
| 53 | static void vhost_user_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp) | |
| 54 | { | |
| 55 | VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(vpci_dev); | |
| 56 | DeviceState *vdev = DEVICE(&dev->vdev); | |
| 6a558822 SH |
57 | VirtIOSCSIConf *conf = &dev->vdev.parent_obj.parent_obj.conf; |
| 58 | ||
| 59 | if (conf->num_queues == VIRTIO_SCSI_AUTO_NUM_QUEUES) { | |
| 60 | conf->num_queues = | |
| 61 | virtio_pci_optimal_num_queues(VIRTIO_SCSI_VQ_NUM_FIXED); | |
| 62 | } | |
| 693510dd JQ |
63 | |
| 64 | if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) { | |
| 6a558822 | 65 | vpci_dev->nvectors = conf->num_queues + VIRTIO_SCSI_VQ_NUM_FIXED + 1; |
| 693510dd JQ |
66 | } |
| 67 | ||
| 99ba777e | 68 | qdev_realize(vdev, BUS(&vpci_dev->bus), errp); |
| 693510dd JQ |
69 | } |
| 70 | ||
| 71 | static void vhost_user_scsi_pci_class_init(ObjectClass *klass, void *data) | |
| 72 | { | |
| 73 | DeviceClass *dc = DEVICE_CLASS(klass); | |
| 74 | VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass); | |
| 75 | PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass); | |
| 76 | k->realize = vhost_user_scsi_pci_realize; | |
| 77 | set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); | |
| 4f67d30b | 78 | device_class_set_props(dc, vhost_user_scsi_pci_properties); |
| 693510dd JQ |
79 | pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET; |
| 80 | pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI; | |
| 81 | pcidev_k->revision = 0x00; | |
| 82 | pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI; | |
| 83 | } | |
| 84 | ||
| 85 | static void vhost_user_scsi_pci_instance_init(Object *obj) | |
| 86 | { | |
| 87 | VHostUserSCSIPCI *dev = VHOST_USER_SCSI_PCI(obj); | |
| 88 | ||
| 89 | virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev), | |
| 90 | TYPE_VHOST_USER_SCSI); | |
| 91 | object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev), | |
| d2623129 | 92 | "bootindex"); |
| 693510dd JQ |
93 | } |
| 94 | ||
| 95 | static const VirtioPCIDeviceTypeInfo vhost_user_scsi_pci_info = { | |
| 96 | .base_name = TYPE_VHOST_USER_SCSI_PCI, | |
| 97 | .generic_name = "vhost-user-scsi-pci", | |
| 98 | .transitional_name = "vhost-user-scsi-pci-transitional", | |
| 99 | .non_transitional_name = "vhost-user-scsi-pci-non-transitional", | |
| 100 | .instance_size = sizeof(VHostUserSCSIPCI), | |
| 101 | .instance_init = vhost_user_scsi_pci_instance_init, | |
| 102 | .class_init = vhost_user_scsi_pci_class_init, | |
| 103 | }; | |
| 104 | ||
| 105 | static void vhost_user_scsi_pci_register(void) | |
| 106 | { | |
| 107 | virtio_pci_types_register(&vhost_user_scsi_pci_info); | |
| 108 | } | |
| 109 | ||
| 110 | type_init(vhost_user_scsi_pci_register) |