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vfio/pci: Introduce a vfio pci hot reset interface

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Legacy vfio pci and iommufd cdev have different process to hot reset
vfio device, expand current code to abstract out pci_hot_reset callback
for legacy vfio, this same interface will also be used by iommufd
cdev vfio device.

Rename vfio_pci_hot_reset to vfio_legacy_pci_hot_reset and move it
into container.c.

vfio_pci_[pre/post]_reset and vfio_pci_host_match are exported so
they could be called in legacy and iommufd pci_hot_reset callback.

Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
This commit is contained in:
Zhenzhong Duan 2023-11-21 16:44:07 +08:00 • committed by Cédric Le Goater
parent 4d36ec23a7
commit c328e7e8ad
4 changed files with 182 additions and 162 deletions
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3
hw/vfio/pci.h
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@ -218,6 +218,9 @@ void vfio_probe_igd_bar4_quirk(VFIOPCIDevice *vdev, int nr);
extern const PropertyInfo qdev_prop_nv_gpudirect_clique;
void vfio_pci_pre_reset(VFIOPCIDevice *vdev);
void vfio_pci_post_reset(VFIOPCIDevice *vdev);
bool vfio_pci_host_match(PCIHostDeviceAddress *addr, const char *name);
int vfio_pci_get_pci_hot_reset_info(VFIOPCIDevice *vdev,
struct vfio_pci_hot_reset_info **info_p);