cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

virtio-scsi-pci.c (3512B)

      1/*
      2 * Virtio scsi PCI Bindings
      3 *
      4 * Copyright IBM, Corp. 2007
      5 * Copyright (c) 2009 CodeSourcery
      6 *
      7 * Authors:
      8 *  Anthony Liguori   <aliguori@us.ibm.com>
      9 *  Paul Brook        <paul@codesourcery.com>
     10 *
     11 * This work is licensed under the terms of the GNU GPL, version 2 or
     12 * (at your option) any later version.  See the COPYING file in the
     13 * top-level directory.
     14 */
     15
     16#include "qemu/osdep.h"
     17
     18#include "hw/qdev-properties.h"
     19#include "hw/virtio/virtio-scsi.h"
     20#include "qemu/module.h"
     21#include "virtio-pci.h"
     22#include "qom/object.h"
     23
     24typedef struct VirtIOSCSIPCI VirtIOSCSIPCI;
     25
     26/*
     27 * virtio-scsi-pci: This extends VirtioPCIProxy.
     28 */
     29#define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci-base"
     30DECLARE_INSTANCE_CHECKER(VirtIOSCSIPCI, VIRTIO_SCSI_PCI,
     31                         TYPE_VIRTIO_SCSI_PCI)
     32
     33struct VirtIOSCSIPCI {
     34    VirtIOPCIProxy parent_obj;
     35    VirtIOSCSI vdev;
     36};
     37
     38static Property virtio_scsi_pci_properties[] = {
     39    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
     40                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
     41    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
     42                       DEV_NVECTORS_UNSPECIFIED),
     43    DEFINE_PROP_END_OF_LIST(),
     44};
     45
     46static void virtio_scsi_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     47{
     48    VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(vpci_dev);
     49    DeviceState *vdev = DEVICE(&dev->vdev);
     50    DeviceState *proxy = DEVICE(vpci_dev);
     51    VirtIOSCSIConf *conf = &dev->vdev.parent_obj.conf;
     52    char *bus_name;
     53
     54    if (conf->num_queues == VIRTIO_SCSI_AUTO_NUM_QUEUES) {
     55        conf->num_queues =
     56            virtio_pci_optimal_num_queues(VIRTIO_SCSI_VQ_NUM_FIXED);
     57    }
     58
     59    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
     60        vpci_dev->nvectors = conf->num_queues + VIRTIO_SCSI_VQ_NUM_FIXED + 1;
     61    }
     62
     63    /*
     64     * For command line compatibility, this sets the virtio-scsi-device bus
     65     * name as before.
     66     */
     67    if (proxy->id) {
     68        bus_name = g_strdup_printf("%s.0", proxy->id);
     69        virtio_device_set_child_bus_name(VIRTIO_DEVICE(vdev), bus_name);
     70        g_free(bus_name);
     71    }
     72
     73    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
     74}
     75
     76static void virtio_scsi_pci_class_init(ObjectClass *klass, void *data)
     77{
     78    DeviceClass *dc = DEVICE_CLASS(klass);
     79    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
     80    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
     81
     82    k->realize = virtio_scsi_pci_realize;
     83    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     84    device_class_set_props(dc, virtio_scsi_pci_properties);
     85    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
     86    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_SCSI;
     87    pcidev_k->revision = 0x00;
     88    pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
     89}
     90
     91static void virtio_scsi_pci_instance_init(Object *obj)
     92{
     93    VirtIOSCSIPCI *dev = VIRTIO_SCSI_PCI(obj);
     94
     95    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
     96                                TYPE_VIRTIO_SCSI);
     97}
     98
     99static const VirtioPCIDeviceTypeInfo virtio_scsi_pci_info = {
    100    .base_name              = TYPE_VIRTIO_SCSI_PCI,
    101    .generic_name           = "virtio-scsi-pci",
    102    .transitional_name      = "virtio-scsi-pci-transitional",
    103    .non_transitional_name  = "virtio-scsi-pci-non-transitional",
    104    .instance_size = sizeof(VirtIOSCSIPCI),
    105    .instance_init = virtio_scsi_pci_instance_init,
    106    .class_init    = virtio_scsi_pci_class_init,
    107};
    108
    109static void virtio_scsi_pci_register(void)
    110{
    111    virtio_pci_types_register(&virtio_scsi_pci_info);
    112}
    113
    114type_init(virtio_scsi_pci_register)