| /* |
| * 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 "exec/memory.h" |
| #include "qemu/queue.h" |
| #include "qemu/notify.h" |
| #include "ui/console.h" |
| #include "hw/display/ramfb.h" |
| #ifdef CONFIG_LINUX |
| #include <linux/vfio.h> |
| #endif |
| #include "sysemu/sysemu.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 VFIOMmap { |
| MemoryRegion mem; |
| void *mmap; |
| off_t offset; |
| size_t size; |
| } VFIOMmap; |
| |
| typedef struct VFIORegion { |
| struct VFIODevice *vbasedev; |
| off_t fd_offset; /* offset of region within device fd */ |
| MemoryRegion *mem; /* slow, read/write access */ |
| size_t size; |
| uint32_t flags; /* VFIO region flags (rd/wr/mmap) */ |
| uint32_t nr_mmaps; |
| VFIOMmap *mmaps; |
| uint8_t nr; /* cache the region number for debug */ |
| } VFIORegion; |
| |
| typedef struct VFIOMigration { |
| struct VFIODevice *vbasedev; |
| VMChangeStateEntry *vm_state; |
| Notifier migration_state; |
| uint32_t device_state; |
| int data_fd; |
| void *data_buffer; |
| size_t data_buffer_size; |
| uint64_t mig_flags; |
| uint64_t precopy_init_size; |
| uint64_t precopy_dirty_size; |
| bool initial_data_sent; |
| } VFIOMigration; |
| |
| typedef struct VFIOAddressSpace { |
| AddressSpace *as; |
| QLIST_HEAD(, VFIOContainer) containers; |
| QLIST_ENTRY(VFIOAddressSpace) list; |
| } VFIOAddressSpace; |
| |
| struct VFIOGroup; |
| |
| typedef struct VFIOContainer { |
| VFIOAddressSpace *space; |
| int fd; /* /dev/vfio/vfio, empowered by the attached groups */ |
| MemoryListener listener; |
| MemoryListener prereg_listener; |
| unsigned iommu_type; |
| Error *error; |
| bool initialized; |
| bool dirty_pages_supported; |
| uint64_t dirty_pgsizes; |
| uint64_t max_dirty_bitmap_size; |
| unsigned long pgsizes; |
| unsigned int dma_max_mappings; |
| QLIST_HEAD(, VFIOGuestIOMMU) giommu_list; |
| QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list; |
| QLIST_HEAD(, VFIOGroup) group_list; |
| QLIST_HEAD(, VFIORamDiscardListener) vrdl_list; |
| QLIST_ENTRY(VFIOContainer) next; |
| } VFIOContainer; |
| |
| typedef struct VFIOGuestIOMMU { |
| VFIOContainer *container; |
| IOMMUMemoryRegion *iommu_mr; |
| hwaddr iommu_offset; |
| IOMMUNotifier n; |
| QLIST_ENTRY(VFIOGuestIOMMU) giommu_next; |
| } VFIOGuestIOMMU; |
| |
| typedef struct VFIORamDiscardListener { |
| VFIOContainer *container; |
| MemoryRegion *mr; |
| hwaddr offset_within_address_space; |
| hwaddr size; |
| uint64_t granularity; |
| RamDiscardListener listener; |
| QLIST_ENTRY(VFIORamDiscardListener) next; |
| } VFIORamDiscardListener; |
| |
| typedef struct VFIOHostDMAWindow { |
| hwaddr min_iova; |
| hwaddr max_iova; |
| uint64_t iova_pgsizes; |
| QLIST_ENTRY(VFIOHostDMAWindow) hostwin_next; |
| } VFIOHostDMAWindow; |
| |
| typedef struct VFIODeviceOps VFIODeviceOps; |
| |
| typedef struct VFIODevice { |
| QLIST_ENTRY(VFIODevice) next; |
| struct VFIOGroup *group; |
| char *sysfsdev; |
| char *name; |
| DeviceState *dev; |
| int fd; |
| int type; |
| bool reset_works; |
| bool needs_reset; |
| bool no_mmap; |
| bool ram_block_discard_allowed; |
| OnOffAuto enable_migration; |
| VFIODeviceOps *ops; |
| unsigned int num_irqs; |
| unsigned int num_regions; |
| unsigned int flags; |
| VFIOMigration *migration; |
| Error *migration_blocker; |
| OnOffAuto pre_copy_dirty_page_tracking; |
| bool dirty_pages_supported; |
| bool dirty_tracking; |
| } 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); |
| void (*vfio_save_config)(VFIODevice *vdev, QEMUFile *f); |
| int (*vfio_load_config)(VFIODevice *vdev, QEMUFile *f); |
| }; |
| |
| typedef struct VFIOGroup { |
| int fd; |
| int groupid; |
| VFIOContainer *container; |
| QLIST_HEAD(, VFIODevice) device_list; |
| QLIST_ENTRY(VFIOGroup) next; |
| QLIST_ENTRY(VFIOGroup) container_next; |
| bool ram_block_discard_allowed; |
| } VFIOGroup; |
| |
| typedef struct VFIODMABuf { |
| QemuDmaBuf buf; |
| uint32_t pos_x, pos_y, pos_updates; |
| uint32_t hot_x, hot_y, hot_updates; |
| int dmabuf_id; |
| QTAILQ_ENTRY(VFIODMABuf) next; |
| } VFIODMABuf; |
| |
| typedef struct VFIODisplay { |
| QemuConsole *con; |
| RAMFBState *ramfb; |
| struct vfio_region_info *edid_info; |
| struct vfio_region_gfx_edid *edid_regs; |
| uint8_t *edid_blob; |
| QEMUTimer *edid_link_timer; |
| struct { |
| VFIORegion buffer; |
| DisplaySurface *surface; |
| } region; |
| struct { |
| QTAILQ_HEAD(, VFIODMABuf) bufs; |
| VFIODMABuf *primary; |
| VFIODMABuf *cursor; |
| } dmabuf; |
| } VFIODisplay; |
| |
| void vfio_put_base_device(VFIODevice *vbasedev); |
| 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); |
| int vfio_set_irq_signaling(VFIODevice *vbasedev, int index, int subindex, |
| int action, int fd, Error **errp); |
| void vfio_region_write(void *opaque, hwaddr addr, |
| uint64_t data, unsigned size); |
| uint64_t vfio_region_read(void *opaque, |
| hwaddr addr, unsigned size); |
| int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region, |
| int index, const char *name); |
| int vfio_region_mmap(VFIORegion *region); |
| void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled); |
| void vfio_region_unmap(VFIORegion *region); |
| void vfio_region_exit(VFIORegion *region); |
| void vfio_region_finalize(VFIORegion *region); |
| void vfio_reset_handler(void *opaque); |
| VFIOGroup *vfio_get_group(int groupid, AddressSpace *as, Error **errp); |
| void vfio_put_group(VFIOGroup *group); |
| struct vfio_device_info *vfio_get_device_info(int fd); |
| int vfio_get_device(VFIOGroup *group, const char *name, |
| VFIODevice *vbasedev, Error **errp); |
| |
| extern const MemoryRegionOps vfio_region_ops; |
| typedef QLIST_HEAD(VFIOGroupList, VFIOGroup) VFIOGroupList; |
| extern VFIOGroupList vfio_group_list; |
| |
| bool vfio_mig_active(void); |
| int vfio_block_multiple_devices_migration(VFIODevice *vbasedev, Error **errp); |
| void vfio_unblock_multiple_devices_migration(void); |
| int vfio_block_giommu_migration(VFIODevice *vbasedev, Error **errp); |
| int64_t vfio_mig_bytes_transferred(void); |
| void vfio_reset_bytes_transferred(void); |
| |
| #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); |
| struct vfio_info_cap_header * |
| vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id); |
| bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info, |
| unsigned int *avail); |
| struct vfio_info_cap_header * |
| vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id); |
| #endif |
| extern const MemoryListener vfio_prereg_listener; |
| |
| int vfio_spapr_create_window(VFIOContainer *container, |
| MemoryRegionSection *section, |
| hwaddr *pgsize); |
| int vfio_spapr_remove_window(VFIOContainer *container, |
| hwaddr offset_within_address_space); |
| |
| int vfio_migration_realize(VFIODevice *vbasedev, Error **errp); |
| void vfio_migration_exit(VFIODevice *vbasedev); |
| void vfio_migration_finalize(void); |
| |
| #endif /* HW_VFIO_VFIO_COMMON_H */ |