2 * common header for vfio based device assignment support
4 * Copyright Red Hat, Inc. 2012
7 * Alex Williamson <alex.williamson@redhat.com>
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
12 * Based on qemu-kvm device-assignment:
13 * Adapted for KVM by Qumranet.
14 * Copyright (c) 2007, Neocleus, Alex Novik (alex@neocleus.com)
15 * Copyright (c) 2007, Neocleus, Guy Zana (guy@neocleus.com)
16 * Copyright (C) 2008, Qumranet, Amit Shah (amit.shah@qumranet.com)
17 * Copyright (C) 2008, Red Hat, Amit Shah (amit.shah@redhat.com)
18 * Copyright (C) 2008, IBM, Muli Ben-Yehuda (muli@il.ibm.com)
20 #ifndef HW_VFIO_VFIO_COMMON_H
21 #define HW_VFIO_VFIO_COMMON_H
23 #include "qemu-common.h"
24 #include "exec/address-spaces.h"
25 #include "exec/memory.h"
26 #include "qemu/queue.h"
27 #include "qemu/notify.h"
29 /*#define DEBUG_VFIO*/
31 #define DPRINTF(fmt, ...) \
32 do { fprintf(stderr, "vfio: " fmt, ## __VA_ARGS__); } while (0)
34 #define DPRINTF(fmt, ...) \
38 /* Extra debugging, trap acceleration paths for more logging */
39 #define VFIO_ALLOW_MMAP 1
40 #define VFIO_ALLOW_KVM_INTX 1
41 #define VFIO_ALLOW_KVM_MSI 1
42 #define VFIO_ALLOW_KVM_MSIX 1
45 VFIO_DEVICE_TYPE_PCI
= 0,
48 typedef struct VFIORegion
{
49 struct VFIODevice
*vbasedev
;
50 off_t fd_offset
; /* offset of region within device fd */
51 MemoryRegion mem
; /* slow, read/write access */
52 MemoryRegion mmap_mem
; /* direct mapped access */
55 uint32_t flags
; /* VFIO region flags (rd/wr/mmap) */
56 uint8_t nr
; /* cache the region number for debug */
59 typedef struct VFIOAddressSpace
{
61 QLIST_HEAD(, VFIOContainer
) containers
;
62 QLIST_ENTRY(VFIOAddressSpace
) list
;
67 typedef struct VFIOType1
{
68 MemoryListener listener
;
73 typedef struct VFIOContainer
{
74 VFIOAddressSpace
*space
;
75 int fd
; /* /dev/vfio/vfio, empowered by the attached groups */
77 /* enable abstraction to support various iommu backends */
81 void (*release
)(struct VFIOContainer
*);
83 QLIST_HEAD(, VFIOGuestIOMMU
) giommu_list
;
84 QLIST_HEAD(, VFIOGroup
) group_list
;
85 QLIST_ENTRY(VFIOContainer
) next
;
88 typedef struct VFIOGuestIOMMU
{
89 VFIOContainer
*container
;
92 QLIST_ENTRY(VFIOGuestIOMMU
) giommu_next
;
95 typedef struct VFIODeviceOps VFIODeviceOps
;
97 typedef struct VFIODevice
{
98 QLIST_ENTRY(VFIODevice
) next
;
99 struct VFIOGroup
*group
;
106 unsigned int num_irqs
;
107 unsigned int num_regions
;
111 struct VFIODeviceOps
{
112 void (*vfio_compute_needs_reset
)(VFIODevice
*vdev
);
113 int (*vfio_hot_reset_multi
)(VFIODevice
*vdev
);
114 void (*vfio_eoi
)(VFIODevice
*vdev
);
117 typedef struct VFIOGroup
{
120 VFIOContainer
*container
;
121 QLIST_HEAD(, VFIODevice
) device_list
;
122 QLIST_ENTRY(VFIOGroup
) next
;
123 QLIST_ENTRY(VFIOGroup
) container_next
;
126 void vfio_put_base_device(VFIODevice
*vbasedev
);
127 void vfio_disable_irqindex(VFIODevice
*vbasedev
, int index
);
128 void vfio_unmask_single_irqindex(VFIODevice
*vbasedev
, int index
);
129 void vfio_mask_single_irqindex(VFIODevice
*vbasedev
, int index
);
130 void vfio_region_write(void *opaque
, hwaddr addr
,
131 uint64_t data
, unsigned size
);
132 uint64_t vfio_region_read(void *opaque
,
133 hwaddr addr
, unsigned size
);
134 int vfio_mmap_region(Object
*vdev
, VFIORegion
*region
,
135 MemoryRegion
*mem
, MemoryRegion
*submem
,
136 void **map
, size_t size
, off_t offset
,
138 void vfio_reset_handler(void *opaque
);
139 VFIOGroup
*vfio_get_group(int groupid
, AddressSpace
*as
);
140 void vfio_put_group(VFIOGroup
*group
);
141 int vfio_get_device(VFIOGroup
*group
, const char *name
,
142 VFIODevice
*vbasedev
);
144 extern const MemoryRegionOps vfio_region_ops
;
145 extern QLIST_HEAD(vfio_group_head
, VFIOGroup
) vfio_group_list
;
146 extern QLIST_HEAD(vfio_as_head
, VFIOAddressSpace
) vfio_address_spaces
;
148 #endif /* !HW_VFIO_VFIO_COMMON_H */