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)
21 #ifndef HW_VFIO_VFIO_COMMON_H
22 #define HW_VFIO_VFIO_COMMON_H
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"
30 #include <linux/vfio.h>
33 #define VFIO_MSG_PREFIX "vfio %s: "
36 VFIO_DEVICE_TYPE_PCI
= 0,
37 VFIO_DEVICE_TYPE_PLATFORM
= 1,
38 VFIO_DEVICE_TYPE_CCW
= 2,
39 VFIO_DEVICE_TYPE_AP
= 3,
42 typedef struct VFIOMmap
{
49 typedef struct VFIORegion
{
50 struct VFIODevice
*vbasedev
;
51 off_t fd_offset
; /* offset of region within device fd */
52 MemoryRegion
*mem
; /* slow, read/write access */
54 uint32_t flags
; /* VFIO region flags (rd/wr/mmap) */
57 uint8_t nr
; /* cache the region number for debug */
60 typedef struct VFIOAddressSpace
{
62 QLIST_HEAD(, VFIOContainer
) containers
;
63 QLIST_ENTRY(VFIOAddressSpace
) list
;
68 typedef struct VFIOContainer
{
69 VFIOAddressSpace
*space
;
70 int fd
; /* /dev/vfio/vfio, empowered by the attached groups */
71 MemoryListener listener
;
72 MemoryListener prereg_listener
;
76 unsigned long pgsizes
;
78 * This assumes the host IOMMU can support only a single
79 * contiguous IOVA window. We may need to generalize that in
82 QLIST_HEAD(, VFIOGuestIOMMU
) giommu_list
;
83 QLIST_HEAD(, VFIOHostDMAWindow
) hostwin_list
;
84 QLIST_HEAD(, VFIOGroup
) group_list
;
85 QLIST_ENTRY(VFIOContainer
) next
;
88 typedef struct VFIOGuestIOMMU
{
89 VFIOContainer
*container
;
90 IOMMUMemoryRegion
*iommu
;
93 QLIST_ENTRY(VFIOGuestIOMMU
) giommu_next
;
96 typedef struct VFIOHostDMAWindow
{
99 uint64_t iova_pgsizes
;
100 QLIST_ENTRY(VFIOHostDMAWindow
) hostwin_next
;
103 typedef struct VFIODeviceOps VFIODeviceOps
;
105 typedef struct VFIODevice
{
106 QLIST_ENTRY(VFIODevice
) next
;
107 struct VFIOGroup
*group
;
116 bool balloon_allowed
;
118 unsigned int num_irqs
;
119 unsigned int num_regions
;
123 struct VFIODeviceOps
{
124 void (*vfio_compute_needs_reset
)(VFIODevice
*vdev
);
125 int (*vfio_hot_reset_multi
)(VFIODevice
*vdev
);
126 void (*vfio_eoi
)(VFIODevice
*vdev
);
129 typedef struct VFIOGroup
{
132 VFIOContainer
*container
;
133 QLIST_HEAD(, VFIODevice
) device_list
;
134 QLIST_ENTRY(VFIOGroup
) next
;
135 QLIST_ENTRY(VFIOGroup
) container_next
;
136 bool balloon_allowed
;
139 typedef struct VFIODMABuf
{
141 uint32_t pos_x
, pos_y
, pos_updates
;
142 uint32_t hot_x
, hot_y
, hot_updates
;
144 QTAILQ_ENTRY(VFIODMABuf
) next
;
147 typedef struct VFIODisplay
{
150 struct vfio_region_info
*edid_info
;
151 struct vfio_region_gfx_edid
*edid_regs
;
153 QEMUTimer
*edid_link_timer
;
156 DisplaySurface
*surface
;
159 QTAILQ_HEAD(, VFIODMABuf
) bufs
;
165 void vfio_put_base_device(VFIODevice
*vbasedev
);
166 void vfio_disable_irqindex(VFIODevice
*vbasedev
, int index
);
167 void vfio_unmask_single_irqindex(VFIODevice
*vbasedev
, int index
);
168 void vfio_mask_single_irqindex(VFIODevice
*vbasedev
, int index
);
169 int vfio_set_irq_signaling(VFIODevice
*vbasedev
, int index
, int subindex
,
170 int action
, int fd
, Error
**errp
);
171 void vfio_region_write(void *opaque
, hwaddr addr
,
172 uint64_t data
, unsigned size
);
173 uint64_t vfio_region_read(void *opaque
,
174 hwaddr addr
, unsigned size
);
175 int vfio_region_setup(Object
*obj
, VFIODevice
*vbasedev
, VFIORegion
*region
,
176 int index
, const char *name
);
177 int vfio_region_mmap(VFIORegion
*region
);
178 void vfio_region_mmaps_set_enabled(VFIORegion
*region
, bool enabled
);
179 void vfio_region_exit(VFIORegion
*region
);
180 void vfio_region_finalize(VFIORegion
*region
);
181 void vfio_reset_handler(void *opaque
);
182 VFIOGroup
*vfio_get_group(int groupid
, AddressSpace
*as
, Error
**errp
);
183 void vfio_put_group(VFIOGroup
*group
);
184 int vfio_get_device(VFIOGroup
*group
, const char *name
,
185 VFIODevice
*vbasedev
, Error
**errp
);
187 extern const MemoryRegionOps vfio_region_ops
;
188 typedef QLIST_HEAD(VFIOGroupList
, VFIOGroup
) VFIOGroupList
;
189 extern VFIOGroupList vfio_group_list
;
192 int vfio_get_region_info(VFIODevice
*vbasedev
, int index
,
193 struct vfio_region_info
**info
);
194 int vfio_get_dev_region_info(VFIODevice
*vbasedev
, uint32_t type
,
195 uint32_t subtype
, struct vfio_region_info
**info
);
196 bool vfio_has_region_cap(VFIODevice
*vbasedev
, int region
, uint16_t cap_type
);
197 struct vfio_info_cap_header
*
198 vfio_get_region_info_cap(struct vfio_region_info
*info
, uint16_t id
);
200 extern const MemoryListener vfio_prereg_listener
;
202 int vfio_spapr_create_window(VFIOContainer
*container
,
203 MemoryRegionSection
*section
,
205 int vfio_spapr_remove_window(VFIOContainer
*container
,
206 hwaddr offset_within_address_space
);
208 #endif /* HW_VFIO_VFIO_COMMON_H */