mirror of
https://github.com/qemu/qemu.git
synced 2024-12-05 01:33:41 +08:00
68a27b208a
Current support for bus master (clearing OK bit) together with the need to
support guests which do not enable PCI bus mastering, leads to extra state in
VIRTIO_PCI_FLAG_BUS_MASTER_BUG bit, which isn't robust in case of cross-version
migration for the case when guests use the device before setting DRIVER_OK.
Rip out this code, and replace it:
- Modern QEMU doesn't need VIRTIO_PCI_FLAG_BUS_MASTER_BUG
so just drop it for latest machine type.
- For compat machine types, set PCI_COMMAND if DRIVER_OK
is set.
As this is needed for 2.1 for both pc and ppc, move PC_COMPAT macros from pc.h
to a new common header.
Cc: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
210 lines
5.4 KiB
C
210 lines
5.4 KiB
C
/*
|
|
* Virtio PCI Bindings
|
|
*
|
|
* Copyright IBM, Corp. 2007
|
|
* Copyright (c) 2009 CodeSourcery
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
* Paul Brook <paul@codesourcery.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2. See
|
|
* the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#ifndef QEMU_VIRTIO_PCI_H
|
|
#define QEMU_VIRTIO_PCI_H
|
|
|
|
#include "hw/pci/msi.h"
|
|
#include "hw/virtio/virtio-blk.h"
|
|
#include "hw/virtio/virtio-net.h"
|
|
#include "hw/virtio/virtio-rng.h"
|
|
#include "hw/virtio/virtio-serial.h"
|
|
#include "hw/virtio/virtio-scsi.h"
|
|
#include "hw/virtio/virtio-balloon.h"
|
|
#include "hw/virtio/virtio-bus.h"
|
|
#include "hw/virtio/virtio-9p.h"
|
|
#ifdef CONFIG_VIRTFS
|
|
#include "hw/9pfs/virtio-9p.h"
|
|
#endif
|
|
#ifdef CONFIG_VHOST_SCSI
|
|
#include "hw/virtio/vhost-scsi.h"
|
|
#endif
|
|
|
|
typedef struct VirtIOPCIProxy VirtIOPCIProxy;
|
|
typedef struct VirtIOBlkPCI VirtIOBlkPCI;
|
|
typedef struct VirtIOSCSIPCI VirtIOSCSIPCI;
|
|
typedef struct VirtIOBalloonPCI VirtIOBalloonPCI;
|
|
typedef struct VirtIOSerialPCI VirtIOSerialPCI;
|
|
typedef struct VirtIONetPCI VirtIONetPCI;
|
|
typedef struct VHostSCSIPCI VHostSCSIPCI;
|
|
typedef struct VirtIORngPCI VirtIORngPCI;
|
|
|
|
/* virtio-pci-bus */
|
|
|
|
typedef struct VirtioBusState VirtioPCIBusState;
|
|
typedef struct VirtioBusClass VirtioPCIBusClass;
|
|
|
|
#define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
|
|
#define VIRTIO_PCI_BUS(obj) \
|
|
OBJECT_CHECK(VirtioPCIBusState, (obj), TYPE_VIRTIO_PCI_BUS)
|
|
#define VIRTIO_PCI_BUS_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(VirtioPCIBusClass, obj, TYPE_VIRTIO_PCI_BUS)
|
|
#define VIRTIO_PCI_BUS_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(VirtioPCIBusClass, klass, TYPE_VIRTIO_PCI_BUS)
|
|
|
|
/* Need to activate work-arounds for buggy guests at vmstate load. */
|
|
#define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT 0
|
|
#define VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION \
|
|
(1 << VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT)
|
|
|
|
/* Performance improves when virtqueue kick processing is decoupled from the
|
|
* vcpu thread using ioeventfd for some devices. */
|
|
#define VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT 1
|
|
#define VIRTIO_PCI_FLAG_USE_IOEVENTFD (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
|
|
|
|
typedef struct {
|
|
MSIMessage msg;
|
|
int virq;
|
|
unsigned int users;
|
|
} VirtIOIRQFD;
|
|
|
|
/*
|
|
* virtio-pci: This is the PCIDevice which has a virtio-pci-bus.
|
|
*/
|
|
#define TYPE_VIRTIO_PCI "virtio-pci"
|
|
#define VIRTIO_PCI_GET_CLASS(obj) \
|
|
OBJECT_GET_CLASS(VirtioPCIClass, obj, TYPE_VIRTIO_PCI)
|
|
#define VIRTIO_PCI_CLASS(klass) \
|
|
OBJECT_CLASS_CHECK(VirtioPCIClass, klass, TYPE_VIRTIO_PCI)
|
|
#define VIRTIO_PCI(obj) \
|
|
OBJECT_CHECK(VirtIOPCIProxy, (obj), TYPE_VIRTIO_PCI)
|
|
|
|
typedef struct VirtioPCIClass {
|
|
PCIDeviceClass parent_class;
|
|
int (*init)(VirtIOPCIProxy *vpci_dev);
|
|
} VirtioPCIClass;
|
|
|
|
struct VirtIOPCIProxy {
|
|
PCIDevice pci_dev;
|
|
MemoryRegion bar;
|
|
uint32_t flags;
|
|
uint32_t class_code;
|
|
uint32_t nvectors;
|
|
uint32_t host_features;
|
|
bool ioeventfd_disabled;
|
|
bool ioeventfd_started;
|
|
VirtIOIRQFD *vector_irqfd;
|
|
int nvqs_with_notifiers;
|
|
VirtioBusState bus;
|
|
};
|
|
|
|
|
|
/*
|
|
* virtio-scsi-pci: This extends VirtioPCIProxy.
|
|
*/
|
|
#define TYPE_VIRTIO_SCSI_PCI "virtio-scsi-pci"
|
|
#define VIRTIO_SCSI_PCI(obj) \
|
|
OBJECT_CHECK(VirtIOSCSIPCI, (obj), TYPE_VIRTIO_SCSI_PCI)
|
|
|
|
struct VirtIOSCSIPCI {
|
|
VirtIOPCIProxy parent_obj;
|
|
VirtIOSCSI vdev;
|
|
};
|
|
|
|
#ifdef CONFIG_VHOST_SCSI
|
|
/*
|
|
* vhost-scsi-pci: This extends VirtioPCIProxy.
|
|
*/
|
|
#define TYPE_VHOST_SCSI_PCI "vhost-scsi-pci"
|
|
#define VHOST_SCSI_PCI(obj) \
|
|
OBJECT_CHECK(VHostSCSIPCI, (obj), TYPE_VHOST_SCSI_PCI)
|
|
|
|
struct VHostSCSIPCI {
|
|
VirtIOPCIProxy parent_obj;
|
|
VHostSCSI vdev;
|
|
};
|
|
#endif
|
|
|
|
/*
|
|
* virtio-blk-pci: This extends VirtioPCIProxy.
|
|
*/
|
|
#define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"
|
|
#define VIRTIO_BLK_PCI(obj) \
|
|
OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
|
|
|
|
struct VirtIOBlkPCI {
|
|
VirtIOPCIProxy parent_obj;
|
|
VirtIOBlock vdev;
|
|
};
|
|
|
|
/*
|
|
* virtio-balloon-pci: This extends VirtioPCIProxy.
|
|
*/
|
|
#define TYPE_VIRTIO_BALLOON_PCI "virtio-balloon-pci"
|
|
#define VIRTIO_BALLOON_PCI(obj) \
|
|
OBJECT_CHECK(VirtIOBalloonPCI, (obj), TYPE_VIRTIO_BALLOON_PCI)
|
|
|
|
struct VirtIOBalloonPCI {
|
|
VirtIOPCIProxy parent_obj;
|
|
VirtIOBalloon vdev;
|
|
};
|
|
|
|
/*
|
|
* virtio-serial-pci: This extends VirtioPCIProxy.
|
|
*/
|
|
#define TYPE_VIRTIO_SERIAL_PCI "virtio-serial-pci"
|
|
#define VIRTIO_SERIAL_PCI(obj) \
|
|
OBJECT_CHECK(VirtIOSerialPCI, (obj), TYPE_VIRTIO_SERIAL_PCI)
|
|
|
|
struct VirtIOSerialPCI {
|
|
VirtIOPCIProxy parent_obj;
|
|
VirtIOSerial vdev;
|
|
};
|
|
|
|
/*
|
|
* virtio-net-pci: This extends VirtioPCIProxy.
|
|
*/
|
|
#define TYPE_VIRTIO_NET_PCI "virtio-net-pci"
|
|
#define VIRTIO_NET_PCI(obj) \
|
|
OBJECT_CHECK(VirtIONetPCI, (obj), TYPE_VIRTIO_NET_PCI)
|
|
|
|
struct VirtIONetPCI {
|
|
VirtIOPCIProxy parent_obj;
|
|
VirtIONet vdev;
|
|
};
|
|
|
|
/*
|
|
* virtio-9p-pci: This extends VirtioPCIProxy.
|
|
*/
|
|
|
|
#ifdef CONFIG_VIRTFS
|
|
|
|
#define TYPE_VIRTIO_9P_PCI "virtio-9p-pci"
|
|
#define VIRTIO_9P_PCI(obj) \
|
|
OBJECT_CHECK(V9fsPCIState, (obj), TYPE_VIRTIO_9P_PCI)
|
|
|
|
typedef struct V9fsPCIState {
|
|
VirtIOPCIProxy parent_obj;
|
|
V9fsState vdev;
|
|
} V9fsPCIState;
|
|
|
|
#endif
|
|
|
|
/*
|
|
* virtio-rng-pci: This extends VirtioPCIProxy.
|
|
*/
|
|
#define TYPE_VIRTIO_RNG_PCI "virtio-rng-pci"
|
|
#define VIRTIO_RNG_PCI(obj) \
|
|
OBJECT_CHECK(VirtIORngPCI, (obj), TYPE_VIRTIO_RNG_PCI)
|
|
|
|
struct VirtIORngPCI {
|
|
VirtIOPCIProxy parent_obj;
|
|
VirtIORNG vdev;
|
|
};
|
|
|
|
/* Virtio ABI version, if we increment this, we break the guest driver. */
|
|
#define VIRTIO_PCI_ABI_VERSION 0
|
|
|
|
#endif
|