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Diffstat (limited to 'include/hw/vfio/vfio-device.h')
| -rw-r--r-- | include/hw/vfio/vfio-device.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-device.h b/include/hw/vfio/vfio-device.h new file mode 100644 index 0000000..81c95bb --- /dev/null +++ b/include/hw/vfio/vfio-device.h @@ -0,0 +1,150 @@ +/* + * VFIO Device interface + * + * 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_device_irq_disable(VFIODevice *vbasedev, int index); +void vfio_device_irq_unmask(VFIODevice *vbasedev, int index); +void vfio_device_irq_mask(VFIODevice *vbasedev, int index); +bool vfio_device_irq_set_signaling(VFIODevice *vbasedev, int index, int subindex, + int action, int fd, Error **errp); + +void vfio_device_reset_handler(void *opaque); +bool vfio_device_is_mdev(VFIODevice *vbasedev); +bool vfio_device_hiod_create_and_realize(VFIODevice *vbasedev, + const char *typename, Error **errp); +bool vfio_device_attach(char *name, VFIODevice *vbasedev, + AddressSpace *as, Error **errp); +void vfio_device_detach(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_device_get_region_info(VFIODevice *vbasedev, int index, + struct vfio_region_info **info); +int vfio_device_get_region_info_type(VFIODevice *vbasedev, uint32_t type, + uint32_t subtype, struct vfio_region_info **info); +bool vfio_device_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 */ |