diff options
| author | Brett Creeley <brett.creeley@amd.com> | 2023-08-07 13:57:52 -0700 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-08-16 10:53:26 -0600 |
| commit | bb500dbe2ac622551d98c0bb2735a68f59489c98 (patch) | |
| tree | ece715381ff3a196ce879f74cee292df6ace28ac /drivers/vfio/pci/pds/pci_drv.c | |
| parent | 63f77a7161a2df9924eea9be3b6c63be10151252 (diff) | |
vfio/pds: Add VFIO live migration support
Add live migration support via the VFIO subsystem. The migration
implementation aligns with the definition from uapi/vfio.h and uses
the pds_core PF's adminq for device configuration.
The ability to suspend, resume, and transfer VF device state data is
included along with the required admin queue command structures and
implementations.
PDS_LM_CMD_SUSPEND and PDS_LM_CMD_SUSPEND_STATUS are added to support
the VF device suspend operation.
PDS_LM_CMD_RESUME is added to support the VF device resume operation.
PDS_LM_CMD_STATE_SIZE is added to determine the exact size of the VF
device state data.
PDS_LM_CMD_SAVE is added to get the VF device state data.
PDS_LM_CMD_RESTORE is added to restore the VF device with the
previously saved data from PDS_LM_CMD_SAVE.
PDS_LM_CMD_HOST_VF_STATUS is added to notify the DSC/firmware when
a migration is in/not-in progress from the host's perspective. The
DSC/firmware can use this to clear/setup any necessary state related
to a migration.
Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20230807205755.29579-6-brett.creeley@amd.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/pci/pds/pci_drv.c')
| -rw-r--r-- | drivers/vfio/pci/pds/pci_drv.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/vfio/pci/pds/pci_drv.c b/drivers/vfio/pci/pds/pci_drv.c index d9d2725e2faa..03989f02a1f4 100644 --- a/drivers/vfio/pci/pds/pci_drv.c +++ b/drivers/vfio/pci/pds/pci_drv.c @@ -67,11 +67,24 @@ static const struct pci_device_id pds_vfio_pci_table[] = { }; MODULE_DEVICE_TABLE(pci, pds_vfio_pci_table); +static void pds_vfio_pci_aer_reset_done(struct pci_dev *pdev) +{ + struct pds_vfio_pci_device *pds_vfio = pds_vfio_pci_drvdata(pdev); + + pds_vfio_reset(pds_vfio); +} + +static const struct pci_error_handlers pds_vfio_pci_err_handlers = { + .reset_done = pds_vfio_pci_aer_reset_done, + .error_detected = vfio_pci_core_aer_err_detected, +}; + static struct pci_driver pds_vfio_pci_driver = { .name = KBUILD_MODNAME, .id_table = pds_vfio_pci_table, .probe = pds_vfio_pci_probe, .remove = pds_vfio_pci_remove, + .err_handler = &pds_vfio_pci_err_handlers, .driver_managed_dma = true, }; |