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21#ifndef HW_VFIO_VFIO_COMMON_H
22#define HW_VFIO_VFIO_COMMON_H
23
24#include "exec/memory.h"
25#include "qemu/queue.h"
26#include "qemu/notify.h"
27#include "ui/console.h"
28#include "hw/display/ramfb.h"
29#ifdef CONFIG_LINUX
30#include <linux/vfio.h>
31#endif
32
33#define VFIO_MSG_PREFIX "vfio %s: "
34
35enum {
36 VFIO_DEVICE_TYPE_PCI = 0,
37 VFIO_DEVICE_TYPE_PLATFORM = 1,
38 VFIO_DEVICE_TYPE_CCW = 2,
39 VFIO_DEVICE_TYPE_AP = 3,
40};
41
42typedef struct VFIOMmap {
43 MemoryRegion mem;
44 void *mmap;
45 off_t offset;
46 size_t size;
47} VFIOMmap;
48
49typedef struct VFIORegion {
50 struct VFIODevice *vbasedev;
51 off_t fd_offset;
52 MemoryRegion *mem;
53 size_t size;
54 uint32_t flags;
55 uint32_t nr_mmaps;
56 VFIOMmap *mmaps;
57 uint8_t nr;
58} VFIORegion;
59
60typedef struct VFIOAddressSpace {
61 AddressSpace *as;
62 QLIST_HEAD(, VFIOContainer) containers;
63 QLIST_ENTRY(VFIOAddressSpace) list;
64} VFIOAddressSpace;
65
66struct VFIOGroup;
67
68typedef struct VFIOContainer {
69 VFIOAddressSpace *space;
70 int fd;
71 MemoryListener listener;
72 MemoryListener prereg_listener;
73 unsigned iommu_type;
74 int error;
75 bool initialized;
76 unsigned long pgsizes;
77 QLIST_HEAD(, VFIOGuestIOMMU) giommu_list;
78 QLIST_HEAD(, VFIOHostDMAWindow) hostwin_list;
79 QLIST_HEAD(, VFIOGroup) group_list;
80 QLIST_ENTRY(VFIOContainer) next;
81} VFIOContainer;
82
83typedef struct VFIOGuestIOMMU {
84 VFIOContainer *container;
85 IOMMUMemoryRegion *iommu;
86 hwaddr iommu_offset;
87 IOMMUNotifier n;
88 QLIST_ENTRY(VFIOGuestIOMMU) giommu_next;
89} VFIOGuestIOMMU;
90
91typedef struct VFIOHostDMAWindow {
92 hwaddr min_iova;
93 hwaddr max_iova;
94 uint64_t iova_pgsizes;
95 QLIST_ENTRY(VFIOHostDMAWindow) hostwin_next;
96} VFIOHostDMAWindow;
97
98typedef struct VFIODeviceOps VFIODeviceOps;
99
100typedef struct VFIODevice {
101 QLIST_ENTRY(VFIODevice) next;
102 struct VFIOGroup *group;
103 char *sysfsdev;
104 char *name;
105 DeviceState *dev;
106 int fd;
107 int type;
108 bool reset_works;
109 bool needs_reset;
110 bool no_mmap;
111 bool balloon_allowed;
112 VFIODeviceOps *ops;
113 unsigned int num_irqs;
114 unsigned int num_regions;
115 unsigned int flags;
116} VFIODevice;
117
118struct VFIODeviceOps {
119 void (*vfio_compute_needs_reset)(VFIODevice *vdev);
120 int (*vfio_hot_reset_multi)(VFIODevice *vdev);
121 void (*vfio_eoi)(VFIODevice *vdev);
122};
123
124typedef struct VFIOGroup {
125 int fd;
126 int groupid;
127 VFIOContainer *container;
128 QLIST_HEAD(, VFIODevice) device_list;
129 QLIST_ENTRY(VFIOGroup) next;
130 QLIST_ENTRY(VFIOGroup) container_next;
131 bool balloon_allowed;
132} VFIOGroup;
133
134typedef struct VFIODMABuf {
135 QemuDmaBuf buf;
136 uint32_t pos_x, pos_y, pos_updates;
137 uint32_t hot_x, hot_y, hot_updates;
138 int dmabuf_id;
139 QTAILQ_ENTRY(VFIODMABuf) next;
140} VFIODMABuf;
141
142typedef struct VFIODisplay {
143 QemuConsole *con;
144 RAMFBState *ramfb;
145 struct vfio_region_info *edid_info;
146 struct vfio_region_gfx_edid *edid_regs;
147 uint8_t *edid_blob;
148 QEMUTimer *edid_link_timer;
149 struct {
150 VFIORegion buffer;
151 DisplaySurface *surface;
152 } region;
153 struct {
154 QTAILQ_HEAD(, VFIODMABuf) bufs;
155 VFIODMABuf *primary;
156 VFIODMABuf *cursor;
157 } dmabuf;
158} VFIODisplay;
159
160void vfio_put_base_device(VFIODevice *vbasedev);
161void vfio_disable_irqindex(VFIODevice *vbasedev, int index);
162void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index);
163void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index);
164int vfio_set_irq_signaling(VFIODevice *vbasedev, int index, int subindex,
165 int action, int fd, Error **errp);
166void vfio_region_write(void *opaque, hwaddr addr,
167 uint64_t data, unsigned size);
168uint64_t vfio_region_read(void *opaque,
169 hwaddr addr, unsigned size);
170int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region,
171 int index, const char *name);
172int vfio_region_mmap(VFIORegion *region);
173void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled);
174void vfio_region_exit(VFIORegion *region);
175void vfio_region_finalize(VFIORegion *region);
176void vfio_reset_handler(void *opaque);
177VFIOGroup *vfio_get_group(int groupid, AddressSpace *as, Error **errp);
178void vfio_put_group(VFIOGroup *group);
179int vfio_get_device(VFIOGroup *group, const char *name,
180 VFIODevice *vbasedev, Error **errp);
181
182extern const MemoryRegionOps vfio_region_ops;
183typedef QLIST_HEAD(VFIOGroupList, VFIOGroup) VFIOGroupList;
184extern VFIOGroupList vfio_group_list;
185
186#ifdef CONFIG_LINUX
187int vfio_get_region_info(VFIODevice *vbasedev, int index,
188 struct vfio_region_info **info);
189int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type,
190 uint32_t subtype, struct vfio_region_info **info);
191bool vfio_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type);
192struct vfio_info_cap_header *
193vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id);
194#endif
195extern const MemoryListener vfio_prereg_listener;
196
197int vfio_spapr_create_window(VFIOContainer *container,
198 MemoryRegionSection *section,
199 hwaddr *pgsize);
200int vfio_spapr_remove_window(VFIOContainer *container,
201 hwaddr offset_within_address_space);
202
203#endif
204
