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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 VFIOIOMMUClass VFIOIOMMUClass;
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 {
Object parent;
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;
NotifierWithReturn cpr_reboot_notifier;
} 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);
bool 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, Error **errp);
int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer,
VFIOBitmap *vbmap, hwaddr iova, hwaddr size, Error **errp);
void vfio_container_destroy(VFIOContainerBase *bcontainer);
#define TYPE_VFIO_IOMMU "vfio-iommu"
#define TYPE_VFIO_IOMMU_LEGACY TYPE_VFIO_IOMMU "-legacy"
#define TYPE_VFIO_IOMMU_SPAPR TYPE_VFIO_IOMMU "-spapr"
#define TYPE_VFIO_IOMMU_IOMMUFD TYPE_VFIO_IOMMU "-iommufd"
OBJECT_DECLARE_TYPE(VFIOContainerBase, VFIOIOMMUClass, VFIO_IOMMU)
struct VFIOIOMMUClass {
ObjectClass parent_class;
/* Properties */
const char *hiod_typename;
/* basic feature */
bool (*setup)(VFIOContainerBase *bcontainer, Error **errp);
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);
bool (*attach_device)(const char *name, VFIODevice *vbasedev,
AddressSpace *as, Error **errp);
void (*detach_device)(VFIODevice *vbasedev);
/* migration feature */
/**
* @set_dirty_page_tracking
*
* Start or stop dirty pages tracking on VFIO container
*
* @bcontainer: #VFIOContainerBase on which to de/activate dirty
* page tracking
* @start: indicates whether to start or stop dirty pages tracking
* @errp: pointer to Error*, to store an error if it happens.
*
* Returns zero to indicate success and negative for error
*/
int (*set_dirty_page_tracking)(const VFIOContainerBase *bcontainer,
bool start, Error **errp);
/**
* @query_dirty_bitmap
*
* Get bitmap of dirty pages from container
*
* @bcontainer: #VFIOContainerBase from which to get dirty pages
* @vbmap: #VFIOBitmap internal bitmap structure
* @iova: iova base address
* @size: size of iova range
* @errp: pointer to Error*, to store an error if it happens.
*
* Returns zero to indicate success and negative for error
*/
int (*query_dirty_bitmap)(const VFIOContainerBase *bcontainer,
VFIOBitmap *vbmap, hwaddr iova, hwaddr size, Error **errp);
/* PCI specific */
int (*pci_hot_reset)(VFIODevice *vbasedev, bool single);
/* SPAPR specific */
bool (*add_window)(VFIOContainerBase *bcontainer,
MemoryRegionSection *section,
Error **errp);
void (*del_window)(VFIOContainerBase *bcontainer,
MemoryRegionSection *section);
void (*release)(VFIOContainerBase *bcontainer);
};
#endif /* HW_VFIO_VFIO_CONTAINER_BASE_H */
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