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21#ifndef HW_VFIO_VFIO_COMMON_H
22#define HW_VFIO_VFIO_COMMON_H
23
24#include "qemu-common.h"
25#include "exec/address-spaces.h"
26#include "exec/memory.h"
27#include "qemu/queue.h"
28#include "qemu/notify.h"
29#ifdef CONFIG_LINUX
30#include <linux/vfio.h>
31#endif
32
33#define ERR_PREFIX "vfio error: %s: "
34#define WARN_PREFIX "vfio warning: %s: "
35
36
37#ifdef DEBUG_VFIO
38#define DPRINTF(fmt, ...) \
39 do { fprintf(stderr, "vfio: " fmt, ## __VA_ARGS__); } while (0)
40#else
41#define DPRINTF(fmt, ...) \
42 do { } while (0)
43#endif
44
45enum {
46 VFIO_DEVICE_TYPE_PCI = 0,
47 VFIO_DEVICE_TYPE_PLATFORM = 1,
48 VFIO_DEVICE_TYPE_CCW = 2,
49};
50
51typedef struct VFIOMmap {
52 MemoryRegion mem;
53 void *mmap;
54 off_t offset;
55 size_t size;
56} VFIOMmap;
57
58typedef struct VFIORegion {
59 struct VFIODevice *vbasedev;
60 off_t fd_offset;
61 MemoryRegion *mem;
62 size_t size;
63 uint32_t flags;
64 uint32_t nr_mmaps;
65 VFIOMmap *mmaps;
66 uint8_t nr;
67} VFIORegion;
68
69typedef struct VFIOAddressSpace {
70 AddressSpace *as;
71 QLIST_HEAD(, VFIOContainer) containers;
72 QLIST_ENTRY(VFIOAddressSpace) list;
73} VFIOAddressSpace;
74
75struct VFIOGroup;
76
77typedef struct VFIOContainer {
78 VFIOAddressSpace *space;
79 int fd;
80 MemoryListener listener;
81 MemoryListener prereg_listener;
82 unsigned iommu_type;
83 int error;
84 bool initialized;
85
86
87
88
89
90 QLIST_HEAD(, VFIOGuestIOMMU) giommu_list;
91 QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list;
92 QLIST_HEAD(, VFIOGroup) group_list;
93 QLIST_ENTRY(VFIOContainer) next;
94} VFIOContainer;
95
96typedef struct VFIOGuestIOMMU {
97 VFIOContainer *container;
98 IOMMUMemoryRegion *iommu;
99 hwaddr iommu_offset;
100 IOMMUNotifier n;
101 QLIST_ENTRY(VFIOGuestIOMMU) giommu_next;
102} VFIOGuestIOMMU;
103
104typedef struct VFIOHostDMAWindow {
105 hwaddr min_iova;
106 hwaddr max_iova;
107 uint64_t iova_pgsizes;
108 QLIST_ENTRY(VFIOHostDMAWindow) hostwin_next;
109} VFIOHostDMAWindow;
110
111typedef struct VFIODeviceOps VFIODeviceOps;
112
113typedef struct VFIODevice {
114 QLIST_ENTRY(VFIODevice) next;
115 struct VFIOGroup *group;
116 char *sysfsdev;
117 char *name;
118 DeviceState *dev;
119 int fd;
120 int type;
121 bool reset_works;
122 bool needs_reset;
123 bool no_mmap;
124 VFIODeviceOps *ops;
125 unsigned int num_irqs;
126 unsigned int num_regions;
127 unsigned int flags;
128} VFIODevice;
129
130struct VFIODeviceOps {
131 void (*vfio_compute_needs_reset)(VFIODevice *vdev);
132 int (*vfio_hot_reset_multi)(VFIODevice *vdev);
133 void (*vfio_eoi)(VFIODevice *vdev);
134};
135
136typedef struct VFIOGroup {
137 int fd;
138 int groupid;
139 VFIOContainer *container;
140 QLIST_HEAD(, VFIODevice) device_list;
141 QLIST_ENTRY(VFIOGroup) next;
142 QLIST_ENTRY(VFIOGroup) container_next;
143} VFIOGroup;
144
145void vfio_put_base_device(VFIODevice *vbasedev);
146void vfio_disable_irqindex(VFIODevice *vbasedev, int index);
147void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index);
148void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index);
149void vfio_region_write(void *opaque, hwaddr addr,
150 uint64_t data, unsigned size);
151uint64_t vfio_region_read(void *opaque,
152 hwaddr addr, unsigned size);
153int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region,
154 int index, const char *name);
155int vfio_region_mmap(VFIORegion *region);
156void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled);
157void vfio_region_exit(VFIORegion *region);
158void vfio_region_finalize(VFIORegion *region);
159void vfio_reset_handler(void *opaque);
160VFIOGroup *vfio_get_group(int groupid, AddressSpace *as, Error **errp);
161void vfio_put_group(VFIOGroup *group);
162int vfio_get_device(VFIOGroup *group, const char *name,
163 VFIODevice *vbasedev, Error **errp);
164
165extern const MemoryRegionOps vfio_region_ops;
166extern QLIST_HEAD(vfio_group_head, VFIOGroup) vfio_group_list;
167extern QLIST_HEAD(vfio_as_head, VFIOAddressSpace) vfio_address_spaces;
168
169#ifdef CONFIG_LINUX
170int vfio_get_region_info(VFIODevice *vbasedev, int index,
171 struct vfio_region_info **info);
172int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type,
173 uint32_t subtype, struct vfio_region_info **info);
174#endif
175extern const MemoryListener vfio_prereg_listener;
176
177int vfio_spapr_create_window(VFIOContainer *container,
178 MemoryRegionSection *section,
179 hwaddr *pgsize);
180int vfio_spapr_remove_window(VFIOContainer *container,
181 hwaddr offset_within_address_space);
182
183#endif
184