This converts existing DECLARE_OBJ_CHECKERS usage to OBJECT_DECLARE_TYPE when possible. $ ./scripts/codeconverter/converter.py -i \ --pattern=AddObjectDeclareType $(git grep -l '' -- '*.[ch]') Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Acked-by: Paul Durrant <paul@xen.org> Message-Id: <20200916182519.415636-5-ehabkost@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
247 lines
7 KiB
C
247 lines
7 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-bus.h"
|
|
#include "qom/object.h"
|
|
|
|
|
|
/* virtio-pci-bus */
|
|
|
|
typedef struct VirtioBusState VirtioPCIBusState;
|
|
typedef struct VirtioBusClass VirtioPCIBusClass;
|
|
|
|
#define TYPE_VIRTIO_PCI_BUS "virtio-pci-bus"
|
|
DECLARE_OBJ_CHECKERS(VirtioPCIBusState, VirtioPCIBusClass,
|
|
VIRTIO_PCI_BUS, TYPE_VIRTIO_PCI_BUS)
|
|
|
|
enum {
|
|
VIRTIO_PCI_FLAG_BUS_MASTER_BUG_MIGRATION_BIT,
|
|
VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT,
|
|
VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT,
|
|
VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT,
|
|
VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT,
|
|
VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT,
|
|
VIRTIO_PCI_FLAG_ATS_BIT,
|
|
VIRTIO_PCI_FLAG_INIT_DEVERR_BIT,
|
|
VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT,
|
|
VIRTIO_PCI_FLAG_INIT_PM_BIT,
|
|
VIRTIO_PCI_FLAG_INIT_FLR_BIT,
|
|
};
|
|
|
|
/* Need to activate work-arounds for buggy guests at vmstate load. */
|
|
#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 (1 << VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT)
|
|
|
|
/* virtio version flags */
|
|
#define VIRTIO_PCI_FLAG_DISABLE_PCIE (1 << VIRTIO_PCI_FLAG_DISABLE_PCIE_BIT)
|
|
|
|
/* migrate extra state */
|
|
#define VIRTIO_PCI_FLAG_MIGRATE_EXTRA (1 << VIRTIO_PCI_FLAG_MIGRATE_EXTRA_BIT)
|
|
|
|
/* have pio notification for modern device ? */
|
|
#define VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY \
|
|
(1 << VIRTIO_PCI_FLAG_MODERN_PIO_NOTIFY_BIT)
|
|
|
|
/* page per vq flag to be used by split drivers within guests */
|
|
#define VIRTIO_PCI_FLAG_PAGE_PER_VQ \
|
|
(1 << VIRTIO_PCI_FLAG_PAGE_PER_VQ_BIT)
|
|
|
|
/* address space translation service */
|
|
#define VIRTIO_PCI_FLAG_ATS (1 << VIRTIO_PCI_FLAG_ATS_BIT)
|
|
|
|
/* Init error enabling flags */
|
|
#define VIRTIO_PCI_FLAG_INIT_DEVERR (1 << VIRTIO_PCI_FLAG_INIT_DEVERR_BIT)
|
|
|
|
/* Init Link Control register */
|
|
#define VIRTIO_PCI_FLAG_INIT_LNKCTL (1 << VIRTIO_PCI_FLAG_INIT_LNKCTL_BIT)
|
|
|
|
/* Init Power Management */
|
|
#define VIRTIO_PCI_FLAG_INIT_PM (1 << VIRTIO_PCI_FLAG_INIT_PM_BIT)
|
|
|
|
/* Init Function Level Reset capability */
|
|
#define VIRTIO_PCI_FLAG_INIT_FLR (1 << VIRTIO_PCI_FLAG_INIT_FLR_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"
|
|
OBJECT_DECLARE_TYPE(VirtIOPCIProxy, VirtioPCIClass, VIRTIO_PCI)
|
|
|
|
struct VirtioPCIClass {
|
|
PCIDeviceClass parent_class;
|
|
DeviceRealize parent_dc_realize;
|
|
void (*realize)(VirtIOPCIProxy *vpci_dev, Error **errp);
|
|
};
|
|
|
|
typedef struct VirtIOPCIRegion {
|
|
MemoryRegion mr;
|
|
uint32_t offset;
|
|
uint32_t size;
|
|
uint32_t type;
|
|
} VirtIOPCIRegion;
|
|
|
|
typedef struct VirtIOPCIQueue {
|
|
uint16_t num;
|
|
bool enabled;
|
|
uint32_t desc[2];
|
|
uint32_t avail[2];
|
|
uint32_t used[2];
|
|
} VirtIOPCIQueue;
|
|
|
|
struct VirtIOPCIProxy {
|
|
PCIDevice pci_dev;
|
|
MemoryRegion bar;
|
|
union {
|
|
struct {
|
|
VirtIOPCIRegion common;
|
|
VirtIOPCIRegion isr;
|
|
VirtIOPCIRegion device;
|
|
VirtIOPCIRegion notify;
|
|
VirtIOPCIRegion notify_pio;
|
|
};
|
|
VirtIOPCIRegion regs[5];
|
|
};
|
|
MemoryRegion modern_bar;
|
|
MemoryRegion io_bar;
|
|
uint32_t legacy_io_bar_idx;
|
|
uint32_t msix_bar_idx;
|
|
uint32_t modern_io_bar_idx;
|
|
uint32_t modern_mem_bar_idx;
|
|
int config_cap;
|
|
uint32_t flags;
|
|
bool disable_modern;
|
|
bool ignore_backend_features;
|
|
OnOffAuto disable_legacy;
|
|
uint32_t class_code;
|
|
uint32_t nvectors;
|
|
uint32_t dfselect;
|
|
uint32_t gfselect;
|
|
uint32_t guest_features[2];
|
|
VirtIOPCIQueue vqs[VIRTIO_QUEUE_MAX];
|
|
|
|
VirtIOIRQFD *vector_irqfd;
|
|
int nvqs_with_notifiers;
|
|
VirtioBusState bus;
|
|
};
|
|
|
|
static inline bool virtio_pci_modern(VirtIOPCIProxy *proxy)
|
|
{
|
|
return !proxy->disable_modern;
|
|
}
|
|
|
|
static inline bool virtio_pci_legacy(VirtIOPCIProxy *proxy)
|
|
{
|
|
return proxy->disable_legacy == ON_OFF_AUTO_OFF;
|
|
}
|
|
|
|
static inline void virtio_pci_force_virtio_1(VirtIOPCIProxy *proxy)
|
|
{
|
|
proxy->disable_modern = false;
|
|
proxy->disable_legacy = ON_OFF_AUTO_ON;
|
|
}
|
|
|
|
static inline void virtio_pci_disable_modern(VirtIOPCIProxy *proxy)
|
|
{
|
|
proxy->disable_modern = true;
|
|
}
|
|
|
|
/*
|
|
* virtio-input-pci: This extends VirtioPCIProxy.
|
|
*/
|
|
#define TYPE_VIRTIO_INPUT_PCI "virtio-input-pci"
|
|
|
|
/* Virtio ABI version, if we increment this, we break the guest driver. */
|
|
#define VIRTIO_PCI_ABI_VERSION 0
|
|
|
|
/* Input for virtio_pci_types_register() */
|
|
typedef struct VirtioPCIDeviceTypeInfo {
|
|
/*
|
|
* Common base class for the subclasses below.
|
|
*
|
|
* Required only if transitional_name or non_transitional_name is set.
|
|
*
|
|
* We need a separate base type instead of making all types
|
|
* inherit from generic_name for two reasons:
|
|
* 1) generic_name implements INTERFACE_PCIE_DEVICE, but
|
|
* transitional_name does not.
|
|
* 2) generic_name has the "disable-legacy" and "disable-modern"
|
|
* properties, transitional_name and non_transitional name don't.
|
|
*/
|
|
const char *base_name;
|
|
/*
|
|
* Generic device type. Optional.
|
|
*
|
|
* Supports both transitional and non-transitional modes,
|
|
* using the disable-legacy and disable-modern properties.
|
|
* If disable-legacy=auto, (non-)transitional mode is selected
|
|
* depending on the bus where the device is plugged.
|
|
*
|
|
* Implements both INTERFACE_PCIE_DEVICE and INTERFACE_CONVENTIONAL_PCI_DEVICE,
|
|
* but PCI Express is supported only in non-transitional mode.
|
|
*
|
|
* The only type implemented by QEMU 3.1 and older.
|
|
*/
|
|
const char *generic_name;
|
|
/*
|
|
* The transitional device type. Optional.
|
|
*
|
|
* Implements both INTERFACE_PCIE_DEVICE and INTERFACE_CONVENTIONAL_PCI_DEVICE.
|
|
*/
|
|
const char *transitional_name;
|
|
/*
|
|
* The non-transitional device type. Optional.
|
|
*
|
|
* Implements INTERFACE_CONVENTIONAL_PCI_DEVICE only.
|
|
*/
|
|
const char *non_transitional_name;
|
|
|
|
/* Parent type. If NULL, TYPE_VIRTIO_PCI is used */
|
|
const char *parent;
|
|
|
|
/* Same as TypeInfo fields: */
|
|
size_t instance_size;
|
|
size_t class_size;
|
|
void (*instance_init)(Object *obj);
|
|
void (*class_init)(ObjectClass *klass, void *data);
|
|
InterfaceInfo *interfaces;
|
|
} VirtioPCIDeviceTypeInfo;
|
|
|
|
/* Register virtio-pci type(s). @t must be static. */
|
|
void virtio_pci_types_register(const VirtioPCIDeviceTypeInfo *t);
|
|
|
|
/**
|
|
* virtio_pci_optimal_num_queues:
|
|
* @fixed_queues: number of queues that are always present
|
|
*
|
|
* Returns: The optimal number of queues for a multi-queue device, excluding
|
|
* @fixed_queues.
|
|
*/
|
|
unsigned virtio_pci_optimal_num_queues(unsigned fixed_queues);
|
|
|
|
#endif
|