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vfio: Introduce a new header file for helper services

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Gather all helper routine declarations into "vfio-helpers.h" to reduce
exposure of VFIO internals in "hw/vfio/vfio-common.h".

Reviewed-by: John Levon <john.levon@nutanix.com>
Link: https://lore.kernel.org/qemu-devel/20250318095415.670319-16-clg@redhat.com
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Link: https://lore.kernel.org/qemu-devel/20250326075122.1299361-17-clg@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Cédric Le Goater 2025-03-26 08:51:01 +01:00
parent 5cf52416e4
commit ac28680d5e
8 changed files with 32 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

1
hw/s390x/s390-pci-vfio.c
View file

@ -21,6 +21,7 @@
#include "hw/s390x/s390-pci-vfio.h" #include "hw/s390x/s390-pci-vfio.h"
#include "hw/vfio/pci.h" #include "hw/vfio/pci.h"
#include "hw/vfio/vfio-container.h" #include "hw/vfio/vfio-container.h"
#include "hw/vfio/vfio-helpers.h"
/* /*
* Get the current DMA available count from vfio. Returns true if vfio is * Get the current DMA available count from vfio. Returns true if vfio is

1
hw/vfio/common.c
View file

@ -44,6 +44,7 @@
#include "system/tcg.h" #include "system/tcg.h"
#include "system/tpm.h" #include "system/tpm.h"
#include "vfio-migration-internal.h" #include "vfio-migration-internal.h"
#include "vfio-helpers.h"
VFIODeviceList vfio_device_list = VFIODeviceList vfio_device_list =
QLIST_HEAD_INITIALIZER(vfio_device_list); QLIST_HEAD_INITIALIZER(vfio_device_list);

1
hw/vfio/container.c
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@ -33,6 +33,7 @@
#include "qapi/error.h" #include "qapi/error.h"
#include "pci.h" #include "pci.h"
#include "hw/vfio/vfio-container.h" #include "hw/vfio/vfio-container.h"
#include "vfio-helpers.h"
#define TYPE_HOST_IOMMU_DEVICE_LEGACY_VFIO TYPE_HOST_IOMMU_DEVICE "-legacy-vfio" #define TYPE_HOST_IOMMU_DEVICE_LEGACY_VFIO TYPE_HOST_IOMMU_DEVICE "-legacy-vfio"

1
hw/vfio/helpers.c
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@ -30,6 +30,7 @@
#include "qemu/error-report.h" #include "qemu/error-report.h"
#include "qemu/units.h" #include "qemu/units.h"
#include "monitor/monitor.h" #include "monitor/monitor.h"
#include "vfio-helpers.h"
/* /*
* Common VFIO interrupt disable * Common VFIO interrupt disable

1
hw/vfio/pci.c
View file

@ -45,6 +45,7 @@
#include "migration/qemu-file.h" #include "migration/qemu-file.h"
#include "system/iommufd.h" #include "system/iommufd.h"
#include "vfio-migration-internal.h" #include "vfio-migration-internal.h"
#include "vfio-helpers.h"
#define TYPE_VFIO_PCI_NOHOTPLUG "vfio-pci-nohotplug" #define TYPE_VFIO_PCI_NOHOTPLUG "vfio-pci-nohotplug"

1
hw/vfio/region.c
View file

@ -29,6 +29,7 @@
#include "qemu/error-report.h" #include "qemu/error-report.h"
#include "qemu/units.h" #include "qemu/units.h"
#include "monitor/monitor.h" #include "monitor/monitor.h"
#include "vfio-helpers.h"
/* /*
* IO Port/MMIO - Beware of the endians, VFIO is always little endian * IO Port/MMIO - Beware of the endians, VFIO is always little endian

26
hw/vfio/vfio-helpers.h Normal file
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@ -0,0 +1,26 @@
/*
* VFIO helpers
*
* Copyright Red Hat, Inc. 2025
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef HW_VFIO_VFIO_HELPERS_H
#define HW_VFIO_VFIO_HELPERS_H
#ifdef CONFIG_LINUX
#include <linux/vfio.h>
struct vfio_info_cap_header *
vfio_get_cap(void *ptr, uint32_t cap_offset, uint16_t id);
struct vfio_info_cap_header *
vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id);
struct vfio_info_cap_header *
vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id);
#endif
int vfio_bitmap_alloc(VFIOBitmap *vbmap, hwaddr size);
#endif /* HW_VFIO_VFIO_HELPERS_H */

7
include/hw/vfio/vfio-common.h
View file

@ -147,17 +147,10 @@ int vfio_get_region_info(VFIODevice *vbasedev, int index,
int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type, int vfio_get_dev_region_info(VFIODevice *vbasedev, uint32_t type,
uint32_t subtype, struct vfio_region_info **info); uint32_t subtype, struct vfio_region_info **info);
bool vfio_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type); bool vfio_has_region_cap(VFIODevice *vbasedev, int region, uint16_t cap_type);
struct vfio_info_cap_header *
vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id);
bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info, bool vfio_get_info_dma_avail(struct vfio_iommu_type1_info *info,
unsigned int *avail); unsigned int *avail);
struct vfio_info_cap_header *
vfio_get_device_info_cap(struct vfio_device_info *info, uint16_t id);
struct vfio_info_cap_header *
vfio_get_cap(void *ptr, uint32_t cap_offset, uint16_t id);
#endif #endif
int vfio_bitmap_alloc(VFIOBitmap *vbmap, hwaddr size);
bool vfio_devices_all_dirty_tracking_started( bool vfio_devices_all_dirty_tracking_started(
const VFIOContainerBase *bcontainer); const VFIOContainerBase *bcontainer);
bool bool