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/*
* common header for vfio based device assignment support
*
* Copyright Red Hat, Inc. 2012
*
* Authors:
* Alex Williamson <alex.williamson@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2. See
* the COPYING file in the top-level directory.
*
* Based on qemu-kvm device-assignment:
* Adapted for KVM by Qumranet.
* Copyright (c) 2007, Neocleus, Alex Novik (alex@neocleus.com)
* Copyright (c) 2007, Neocleus, Guy Zana (guy@neocleus.com)
* Copyright (C) 2008, Qumranet, Amit Shah (amit.shah@qumranet.com)
* Copyright (C) 2008, Red Hat, Amit Shah (amit.shah@redhat.com)
* Copyright (C) 2008, IBM, Muli Ben-Yehuda (muli@il.ibm.com)
*/
#ifndef HW_VFIO_VFIO_COMMON_H
#define HW_VFIO_VFIO_COMMON_H
#include "system/memory.h"
#include "qemu/queue.h"
#ifdef CONFIG_LINUX
#include <linux/vfio.h>
#endif
#include "system/system.h"
#include "hw/vfio/vfio-container-base.h"
#include "system/host_iommu_device.h"
#include "system/iommufd.h"
#define VFIO_MSG_PREFIX "vfio %s: "
enum {
VFIO_DEVICE_TYPE_PCI = 0,
VFIO_DEVICE_TYPE_PLATFORM = 1,
VFIO_DEVICE_TYPE_CCW = 2,
VFIO_DEVICE_TYPE_AP = 3,
};
typedef struct VFIODeviceOps VFIODeviceOps;
typedef struct VFIOMigration VFIOMigration;
typedef struct IOMMUFDBackend IOMMUFDBackend;
typedef struct VFIOIOASHwpt VFIOIOASHwpt;
typedef struct VFIODevice {
QLIST_ENTRY(VFIODevice) next;
QLIST_ENTRY(VFIODevice) container_next;
QLIST_ENTRY(VFIODevice) global_next;
struct VFIOGroup *group;
VFIOContainerBase *bcontainer;
char *sysfsdev;
char *name;
DeviceState *dev;
int fd;
int type;
bool mdev;
bool reset_works;
bool needs_reset;
bool no_mmap;
bool ram_block_discard_allowed;
OnOffAuto enable_migration;
OnOffAuto migration_multifd_transfer;
bool migration_events;
VFIODeviceOps *ops;
unsigned int num_irqs;
unsigned int num_regions;
unsigned int flags;
VFIOMigration *migration;
Error *migration_blocker;
OnOffAuto pre_copy_dirty_page_tracking;
OnOffAuto device_dirty_page_tracking;
bool dirty_pages_supported;
bool dirty_tracking; /* Protected by BQL */
bool iommu_dirty_tracking;
HostIOMMUDevice *hiod;
int devid;
IOMMUFDBackend *iommufd;
VFIOIOASHwpt *hwpt;
QLIST_ENTRY(VFIODevice) hwpt_next;
} VFIODevice;
struct VFIODeviceOps {
void (*vfio_compute_needs_reset)(VFIODevice *vdev);
int (*vfio_hot_reset_multi)(VFIODevice *vdev);
void (*vfio_eoi)(VFIODevice *vdev);
Object *(*vfio_get_object)(VFIODevice *vdev);
/**
* @vfio_save_config
*
* Save device config state
*
* @vdev: #VFIODevice for which to save the config
* @f: #QEMUFile where to send the data
* @errp: pointer to Error*, to store an error if it happens.
*
* Returns zero to indicate success and negative for error
*/
int (*vfio_save_config)(VFIODevice *vdev, QEMUFile *f, Error **errp);
/**
* @vfio_load_config
*
* Load device config state
*
* @vdev: #VFIODevice for which to load the config
* @f: #QEMUFile where to get the data
*
* Returns zero to indicate success and negative for error
*/
int (*vfio_load_config)(VFIODevice *vdev, QEMUFile *f);
};
void vfio_disable_irqindex(VFIODevice *vbasedev, int index);
void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index);
void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index);
bool vfio_set_irq_signaling(VFIODevice *vbasedev, int index, int subindex,
int action, int fd, Error **errp);
void vfio_reset_handler(void *opaque);
bool vfio_device_is_mdev(VFIODevice *vbasedev);
bool vfio_device_hiod_realize(VFIODevice *vbasedev, Error **errp);
bool vfio_attach_device(char *name, VFIODevice *vbasedev,
AddressSpace *as, Error **errp);
void vfio_detach_device(VFIODevice *vbasedev);
VFIODevice *vfio_get_vfio_device(Object *obj);
typedef QLIST_HEAD(VFIODeviceList, VFIODevice) VFIODeviceList;
extern VFIODeviceList vfio_device_list;
#ifdef CONFIG_LINUX
int vfio_get_region_info(VFIODevice *vbasedev, int index,
struct vfio_region_info **info);
int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type,
uint32_t subtype, struct vfio_region_info **info);
bool vfio_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type);
#endif
/* Returns 0 on success, or a negative errno. */
bool vfio_device_get_name(VFIODevice *vbasedev, Error **errp);
void vfio_device_set_fd(VFIODevice *vbasedev, const char *str, Error **errp);
void vfio_device_init(VFIODevice *vbasedev, int type, VFIODeviceOps *ops,
DeviceState *dev, bool ram_discard);
int vfio_device_get_aw_bits(VFIODevice *vdev);
#endif /* HW_VFIO_VFIO_COMMON_H */
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