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-blk-pci.c (3358B)

      1/*
      2 * Virtio blk 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.  See
     12 * the COPYING file in the top-level directory.
     13 *
     14 * Contributions after 2012-01-13 are licensed under the terms of the
     15 * GNU GPL, version 2 or (at your option) any later version.
     16 */
     17
     18#include "qemu/osdep.h"
     19
     20#include "hw/qdev-properties.h"
     21#include "hw/virtio/virtio-blk.h"
     22#include "virtio-pci.h"
     23#include "qapi/error.h"
     24#include "qemu/module.h"
     25#include "qom/object.h"
     26
     27typedef struct VirtIOBlkPCI VirtIOBlkPCI;
     28
     29/*
     30 * virtio-blk-pci: This extends VirtioPCIProxy.
     31 */
     32#define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci-base"
     33DECLARE_INSTANCE_CHECKER(VirtIOBlkPCI, VIRTIO_BLK_PCI,
     34                         TYPE_VIRTIO_BLK_PCI)
     35
     36struct VirtIOBlkPCI {
     37    VirtIOPCIProxy parent_obj;
     38    VirtIOBlock vdev;
     39};
     40
     41static Property virtio_blk_pci_properties[] = {
     42    DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
     43    DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
     44                    VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
     45    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors,
     46                       DEV_NVECTORS_UNSPECIFIED),
     47    DEFINE_PROP_END_OF_LIST(),
     48};
     49
     50static void virtio_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
     51{
     52    VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev);
     53    DeviceState *vdev = DEVICE(&dev->vdev);
     54    VirtIOBlkConf *conf = &dev->vdev.conf;
     55
     56    if (conf->num_queues == VIRTIO_BLK_AUTO_NUM_QUEUES) {
     57        conf->num_queues = virtio_pci_optimal_num_queues(0);
     58    }
     59
     60    if (vpci_dev->nvectors == DEV_NVECTORS_UNSPECIFIED) {
     61        vpci_dev->nvectors = conf->num_queues + 1;
     62    }
     63
     64    qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
     65}
     66
     67static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
     68{
     69    DeviceClass *dc = DEVICE_CLASS(klass);
     70    VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
     71    PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
     72
     73    set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
     74    device_class_set_props(dc, virtio_blk_pci_properties);
     75    k->realize = virtio_blk_pci_realize;
     76    pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
     77    pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
     78    pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
     79    pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
     80}
     81
     82static void virtio_blk_pci_instance_init(Object *obj)
     83{
     84    VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj);
     85
     86    virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
     87                                TYPE_VIRTIO_BLK);
     88    object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
     89                              "bootindex");
     90}
     91
     92static const VirtioPCIDeviceTypeInfo virtio_blk_pci_info = {
     93    .base_name              = TYPE_VIRTIO_BLK_PCI,
     94    .generic_name           = "virtio-blk-pci",
     95    .transitional_name      = "virtio-blk-pci-transitional",
     96    .non_transitional_name  = "virtio-blk-pci-non-transitional",
     97    .instance_size = sizeof(VirtIOBlkPCI),
     98    .instance_init = virtio_blk_pci_instance_init,
     99    .class_init    = virtio_blk_pci_class_init,
    100};
    101
    102static void virtio_blk_pci_register(void)
    103{
    104    virtio_pci_types_register(&virtio_blk_pci_info);
    105}
    106
    107type_init(virtio_blk_pci_register)