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/*
* VFIO BASE CONTAINER
*
* Copyright (C) 2023 Intel Corporation.
* Copyright Red Hat, Inc. 2023
*
* Authors: Yi Liu <yi.l.liu@intel.com>
* Eric Auger <eric.auger@redhat.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef HW_VFIO_VFIO_CONTAINER_BASE_H
#define HW_VFIO_VFIO_CONTAINER_BASE_H
#include "exec/memory.h"
typedef struct VFIODevice VFIODevice;
typedef struct VFIOIOMMUOps VFIOIOMMUOps;
typedef struct {
unsigned long *bitmap;
hwaddr size;
hwaddr pages;
} VFIOBitmap;
typedef struct VFIOAddressSpace {
AddressSpace *as;
QLIST_HEAD(, VFIOContainerBase) containers;
QLIST_ENTRY(VFIOAddressSpace) list;
} VFIOAddressSpace;
/*
* This is the base object for vfio container backends
*/
typedef struct VFIOContainerBase {
const VFIOIOMMUOps *ops;
VFIOAddressSpace *space;
MemoryListener listener;
Error *error;
bool initialized;
uint64_t dirty_pgsizes;
uint64_t max_dirty_bitmap_size;
unsigned long pgsizes;
unsigned int dma_max_mappings;
bool dirty_pages_supported;
QLIST_HEAD(, VFIOGuestIOMMU) giommu_list;
QLIST_HEAD(, VFIORamDiscardListener) vrdl_list;
QLIST_ENTRY(VFIOContainerBase) next;
QLIST_HEAD(, VFIODevice) device_list;
GList *iova_ranges;
} VFIOContainerBase;
typedef struct VFIOGuestIOMMU {
VFIOContainerBase *bcontainer;
IOMMUMemoryRegion *iommu_mr;
hwaddr iommu_offset;
IOMMUNotifier n;
QLIST_ENTRY(VFIOGuestIOMMU) giommu_next;
} VFIOGuestIOMMU;
typedef struct VFIORamDiscardListener {
VFIOContainerBase *bcontainer;
MemoryRegion *mr;
hwaddr offset_within_address_space;
hwaddr size;
uint64_t granularity;
RamDiscardListener listener;
QLIST_ENTRY(VFIORamDiscardListener) next;
} VFIORamDiscardListener;
int vfio_container_dma_map(VFIOContainerBase *bcontainer,
hwaddr iova, ram_addr_t size,
void *vaddr, bool readonly);
int vfio_container_dma_unmap(VFIOContainerBase *bcontainer,
hwaddr iova, ram_addr_t size,
IOMMUTLBEntry *iotlb);
int vfio_container_add_section_window(VFIOContainerBase *bcontainer,
MemoryRegionSection *section,
Error **errp);
void vfio_container_del_section_window(VFIOContainerBase *bcontainer,
MemoryRegionSection *section);
int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
bool start);
int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer,
VFIOBitmap *vbmap,
hwaddr iova, hwaddr size);
void vfio_container_init(VFIOContainerBase *bcontainer,
VFIOAddressSpace *space,
const VFIOIOMMUOps *ops);
void vfio_container_destroy(VFIOContainerBase *bcontainer);
struct VFIOIOMMUOps {
/* basic feature */
int (*dma_map)(const VFIOContainerBase *bcontainer,
hwaddr iova, ram_addr_t size,
void *vaddr, bool readonly);
int (*dma_unmap)(const VFIOContainerBase *bcontainer,
hwaddr iova, ram_addr_t size,
IOMMUTLBEntry *iotlb);
int (*attach_device)(const char *name, VFIODevice *vbasedev,
AddressSpace *as, Error **errp);
void (*detach_device)(VFIODevice *vbasedev);
/* migration feature */
int (*set_dirty_page_tracking)(const VFIOContainerBase *bcontainer,
bool start);
int (*query_dirty_bitmap)(const VFIOContainerBase *bcontainer,
VFIOBitmap *vbmap,
hwaddr iova, hwaddr size);
/* PCI specific */
int (*pci_hot_reset)(VFIODevice *vbasedev, bool single);
/* SPAPR specific */
int (*add_window)(VFIOContainerBase *bcontainer,
MemoryRegionSection *section,
Error **errp);
void (*del_window)(VFIOContainerBase *bcontainer,
MemoryRegionSection *section);
};
#endif /* HW_VFIO_VFIO_CONTAINER_BASE_H */
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