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Commonize some initialization code shared by the legacy and iommufd vfio implementations. Reviewed-by: Cédric Le Goater <clg@redhat.com> Signed-off-by: John Levon <john.levon@nutanix.com> Link: https://lore.kernel.org/qemu-devel/20250507152020.1254632-2-john.levon@nutanix.com Signed-off-by: Cédric Le Goater <clg@redhat.com>
153 lines
5 KiB
C
153 lines
5 KiB
C
/*
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* VFIO Device interface
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*
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* Copyright Red Hat, Inc. 2012
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*
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* Authors:
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* Alex Williamson <alex.williamson@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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* Based on qemu-kvm device-assignment:
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* Adapted for KVM by Qumranet.
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* Copyright (c) 2007, Neocleus, Alex Novik (alex@neocleus.com)
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* Copyright (c) 2007, Neocleus, Guy Zana (guy@neocleus.com)
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* Copyright (C) 2008, Qumranet, Amit Shah (amit.shah@qumranet.com)
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* Copyright (C) 2008, Red Hat, Amit Shah (amit.shah@redhat.com)
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* Copyright (C) 2008, IBM, Muli Ben-Yehuda (muli@il.ibm.com)
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*/
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#ifndef HW_VFIO_VFIO_COMMON_H
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#define HW_VFIO_VFIO_COMMON_H
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#include "system/memory.h"
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#include "qemu/queue.h"
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#ifdef CONFIG_LINUX
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#include <linux/vfio.h>
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#endif
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#include "system/system.h"
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#include "hw/vfio/vfio-container-base.h"
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#include "system/host_iommu_device.h"
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#include "system/iommufd.h"
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#define VFIO_MSG_PREFIX "vfio %s: "
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enum {
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VFIO_DEVICE_TYPE_PCI = 0,
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VFIO_DEVICE_TYPE_PLATFORM = 1,
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VFIO_DEVICE_TYPE_CCW = 2,
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VFIO_DEVICE_TYPE_AP = 3,
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};
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typedef struct VFIODeviceOps VFIODeviceOps;
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typedef struct VFIOMigration VFIOMigration;
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typedef struct IOMMUFDBackend IOMMUFDBackend;
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typedef struct VFIOIOASHwpt VFIOIOASHwpt;
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typedef struct VFIODevice {
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QLIST_ENTRY(VFIODevice) next;
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QLIST_ENTRY(VFIODevice) container_next;
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QLIST_ENTRY(VFIODevice) global_next;
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struct VFIOGroup *group;
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VFIOContainerBase *bcontainer;
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char *sysfsdev;
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char *name;
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DeviceState *dev;
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int fd;
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int type;
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bool mdev;
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bool reset_works;
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bool needs_reset;
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bool no_mmap;
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bool ram_block_discard_allowed;
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OnOffAuto enable_migration;
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OnOffAuto migration_multifd_transfer;
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bool migration_events;
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VFIODeviceOps *ops;
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unsigned int num_irqs;
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unsigned int num_regions;
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unsigned int flags;
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VFIOMigration *migration;
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Error *migration_blocker;
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OnOffAuto pre_copy_dirty_page_tracking;
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OnOffAuto device_dirty_page_tracking;
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bool dirty_pages_supported;
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bool dirty_tracking; /* Protected by BQL */
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bool iommu_dirty_tracking;
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HostIOMMUDevice *hiod;
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int devid;
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IOMMUFDBackend *iommufd;
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VFIOIOASHwpt *hwpt;
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QLIST_ENTRY(VFIODevice) hwpt_next;
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} VFIODevice;
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struct VFIODeviceOps {
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void (*vfio_compute_needs_reset)(VFIODevice *vdev);
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int (*vfio_hot_reset_multi)(VFIODevice *vdev);
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void (*vfio_eoi)(VFIODevice *vdev);
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Object *(*vfio_get_object)(VFIODevice *vdev);
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/**
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* @vfio_save_config
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*
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* Save device config state
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*
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* @vdev: #VFIODevice for which to save the config
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* @f: #QEMUFile where to send the data
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* @errp: pointer to Error*, to store an error if it happens.
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*
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* Returns zero to indicate success and negative for error
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*/
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int (*vfio_save_config)(VFIODevice *vdev, QEMUFile *f, Error **errp);
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/**
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* @vfio_load_config
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*
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* Load device config state
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*
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* @vdev: #VFIODevice for which to load the config
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* @f: #QEMUFile where to get the data
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*
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* Returns zero to indicate success and negative for error
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*/
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int (*vfio_load_config)(VFIODevice *vdev, QEMUFile *f);
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};
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void vfio_device_irq_disable(VFIODevice *vbasedev, int index);
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void vfio_device_irq_unmask(VFIODevice *vbasedev, int index);
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void vfio_device_irq_mask(VFIODevice *vbasedev, int index);
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bool vfio_device_irq_set_signaling(VFIODevice *vbasedev, int index, int subindex,
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int action, int fd, Error **errp);
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void vfio_device_reset_handler(void *opaque);
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bool vfio_device_is_mdev(VFIODevice *vbasedev);
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bool vfio_device_hiod_create_and_realize(VFIODevice *vbasedev,
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const char *typename, Error **errp);
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bool vfio_device_attach(char *name, VFIODevice *vbasedev,
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AddressSpace *as, Error **errp);
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void vfio_device_detach(VFIODevice *vbasedev);
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VFIODevice *vfio_get_vfio_device(Object *obj);
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typedef QLIST_HEAD(VFIODeviceList, VFIODevice) VFIODeviceList;
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extern VFIODeviceList vfio_device_list;
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#ifdef CONFIG_LINUX
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void vfio_device_prepare(VFIODevice *vbasedev, VFIOContainerBase *bcontainer,
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struct vfio_device_info *info);
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int vfio_device_get_region_info(VFIODevice *vbasedev, int index,
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struct vfio_region_info **info);
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int vfio_device_get_region_info_type(VFIODevice *vbasedev, uint32_t type,
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uint32_t subtype, struct vfio_region_info **info);
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bool vfio_device_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type);
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#endif
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/* Returns 0 on success, or a negative errno. */
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bool vfio_device_get_name(VFIODevice *vbasedev, Error **errp);
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void vfio_device_set_fd(VFIODevice *vbasedev, const char *str, Error **errp);
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void vfio_device_init(VFIODevice *vbasedev, int type, VFIODeviceOps *ops,
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DeviceState *dev, bool ram_discard);
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int vfio_device_get_aw_bits(VFIODevice *vdev);
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#endif /* HW_VFIO_VFIO_COMMON_H */
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