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vfio: Introduce new files for VFIORegion definitions and declarations

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Gather all VFIORegion related declarations and definitions into their
own files to reduce exposure of VFIO internals in "hw/vfio/vfio-common.h".
They were introduced for 'vfio-platform' support in commits
db0da029a1 ("vfio: Generalize region support") and a664477db8
("hw/vfio/pci: Introduce VFIORegion").

To be noted that the 'vfio-platform' devices have been deprecated and
will be removed in QEMU 10.2. Until then, make the declarations
available externally for 'sysbus-fdt.c'.

Cc: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Link: https://lore.kernel.org/qemu-devel/20250326075122.1299361-12-clg@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Cédric Le Goater 2025-03-26 08:50:56 +01:00
parent d4a8f286e9
commit 499e53cce9
11 changed files with 458 additions and 401 deletions
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32
include/hw/vfio/vfio-common.h
View file

@ -39,25 +39,6 @@ enum {
VFIO_DEVICE_TYPE_CCW = 2,
VFIO_DEVICE_TYPE_AP = 3,
};
typedef struct VFIOMmap {
MemoryRegion mem;
void *mmap;
off_t offset;
size_t size;
} VFIOMmap;
typedef struct VFIORegion {
struct VFIODevice *vbasedev;
off_t fd_offset; /* offset of region within device fd */
MemoryRegion *mem; /* slow, read/write access */
size_t size;
uint32_t flags; /* VFIO region flags (rd/wr/mmap) */
uint32_t nr_mmaps;
VFIOMmap *mmaps;
uint8_t nr; /* cache the region number for debug */
} VFIORegion;
struct VFIOGroup;
typedef struct VFIOContainer {
@ -168,17 +149,7 @@ void vfio_unmask_single_irqindex(VFIODevice *vbasedev, int index);
void vfio_mask_single_irqindex(VFIODevice *vbasedev, int index);
bool vfio_set_irq_signaling(VFIODevice *vbasedev, int index, int subindex,
int action, int fd, Error **errp);
void vfio_region_write(void *opaque, hwaddr addr,
uint64_t data, unsigned size);
uint64_t vfio_region_read(void *opaque,
hwaddr addr, unsigned size);
int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region,
int index, const char *name);
int vfio_region_mmap(VFIORegion *region);
void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled);
void vfio_region_unmap(VFIORegion *region);
void vfio_region_exit(VFIORegion *region);
void vfio_region_finalize(VFIORegion *region);
void vfio_reset_handler(void *opaque);
struct vfio_device_info *vfio_get_device_info(int fd);
bool vfio_device_is_mdev(VFIODevice *vbasedev);
@ -194,7 +165,6 @@ int vfio_kvm_device_del_fd(int fd, Error **errp);
bool vfio_cpr_register_container(VFIOContainerBase *bcontainer, Error **errp);
void vfio_cpr_unregister_container(VFIOContainerBase *bcontainer);
extern const MemoryRegionOps vfio_region_ops;
typedef QLIST_HEAD(VFIOGroupList, VFIOGroup) VFIOGroupList;
typedef QLIST_HEAD(VFIODeviceList, VFIODevice) VFIODeviceList;
extern VFIOGroupList vfio_group_list;

2
include/hw/vfio/vfio-platform.h
View file

@ -47,6 +47,8 @@ typedef struct VFIOINTp {
/* function type for user side eventfd handler */
typedef void (*eventfd_user_side_handler_t)(VFIOINTp *intp);
typedef struct VFIORegion VFIORegion;
struct VFIOPlatformDevice {
SysBusDevice sbdev;
VFIODevice vbasedev; /* not a QOM object */

47
include/hw/vfio/vfio-region.h Normal file
View file

@ -0,0 +1,47 @@
/*
* VFIO region
*
* Copyright Red Hat, Inc. 2025
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef HW_VFIO_REGION_H
#define HW_VFIO_REGION_H
#include "system/memory.h"
typedef struct VFIOMmap {
MemoryRegion mem;
void *mmap;
off_t offset;
size_t size;
} VFIOMmap;
typedef struct VFIODevice VFIODevice;
typedef struct VFIORegion {
struct VFIODevice *vbasedev;
off_t fd_offset; /* offset of region within device fd */
MemoryRegion *mem; /* slow, read/write access */
size_t size;
uint32_t flags; /* VFIO region flags (rd/wr/mmap) */
uint32_t nr_mmaps;
VFIOMmap *mmaps;
uint8_t nr; /* cache the region number for debug */
} VFIORegion;
void vfio_region_write(void *opaque, hwaddr addr,
uint64_t data, unsigned size);
uint64_t vfio_region_read(void *opaque,
hwaddr addr, unsigned size);
int vfio_region_setup(Object *obj, VFIODevice *vbasedev, VFIORegion *region,
int index, const char *name);
int vfio_region_mmap(VFIORegion *region);
void vfio_region_mmaps_set_enabled(VFIORegion *region, bool enabled);
void vfio_region_unmap(VFIORegion *region);
void vfio_region_exit(VFIORegion *region);
void vfio_region_finalize(VFIORegion *region);
#endif /* HW_VFIO_REGION_H */