1 /* 2 * VFIO CPR 3 * 4 * Copyright (c) 2025 Oracle and/or its affiliates. 5 * 6 * SPDX-License-Identifier: GPL-2.0-or-later 7 */ 8 9 #ifndef HW_VFIO_VFIO_CPR_H 10 #define HW_VFIO_VFIO_CPR_H 11 12 #include "migration/misc.h" 13 #include "system/memory.h" 14 15 struct VFIOContainer; 16 struct VFIOContainerBase; 17 struct VFIOGroup; 18 struct VFIODevice; 19 struct VFIOPCIDevice; 20 struct VFIOIOMMUFDContainer; 21 struct IOMMUFDBackend; 22 23 typedef int (*dma_map_fn)(const struct VFIOContainerBase *bcontainer, 24 hwaddr iova, ram_addr_t size, void *vaddr, 25 bool readonly, MemoryRegion *mr); 26 27 typedef struct VFIOContainerCPR { 28 Error *blocker; 29 bool vaddr_unmapped; 30 NotifierWithReturn transfer_notifier; 31 MemoryListener remap_listener; 32 } VFIOContainerCPR; 33 34 typedef struct VFIODeviceCPR { 35 Error *mdev_blocker; 36 Error *id_blocker; 37 uint32_t hwpt_id; 38 uint32_t ioas_id; 39 } VFIODeviceCPR; 40 41 bool vfio_legacy_cpr_register_container(struct VFIOContainer *container, 42 Error **errp); 43 void vfio_legacy_cpr_unregister_container(struct VFIOContainer *container); 44 45 int vfio_cpr_reboot_notifier(NotifierWithReturn *notifier, MigrationEvent *e, 46 Error **errp); 47 48 bool vfio_iommufd_cpr_register_container(struct VFIOIOMMUFDContainer *container, 49 Error **errp); 50 void vfio_iommufd_cpr_unregister_container( 51 struct VFIOIOMMUFDContainer *container); 52 bool vfio_iommufd_cpr_register_iommufd(struct IOMMUFDBackend *be, Error **errp); 53 void vfio_iommufd_cpr_unregister_iommufd(struct IOMMUFDBackend *be); 54 void vfio_iommufd_cpr_register_device(struct VFIODevice *vbasedev); 55 void vfio_iommufd_cpr_unregister_device(struct VFIODevice *vbasedev); 56 void vfio_cpr_load_device(struct VFIODevice *vbasedev); 57 58 int vfio_cpr_group_get_device_fd(int d, const char *name); 59 60 bool vfio_cpr_container_match(struct VFIOContainer *container, 61 struct VFIOGroup *group, int fd); 62 63 void vfio_cpr_giommu_remap(struct VFIOContainerBase *bcontainer, 64 MemoryRegionSection *section); 65 66 bool vfio_cpr_ram_discard_register_listener( 67 struct VFIOContainerBase *bcontainer, MemoryRegionSection *section); 68 69 void vfio_cpr_save_vector_fd(struct VFIOPCIDevice *vdev, const char *name, 70 int nr, int fd); 71 int vfio_cpr_load_vector_fd(struct VFIOPCIDevice *vdev, const char *name, 72 int nr); 73 void vfio_cpr_delete_vector_fd(struct VFIOPCIDevice *vdev, const char *name, 74 int nr); 75 76 extern const VMStateDescription vfio_cpr_pci_vmstate; 77 extern const VMStateDescription vmstate_cpr_vfio_devices; 78 79 void vfio_cpr_add_kvm_notifier(void); 80 81 #endif /* HW_VFIO_VFIO_CPR_H */ 82