In certain scenarios (such as VF migration), VF driver needs to interact with PF driver. Add a helper to allow VF driver access to PF xe_device.
Signed-off-by: Michał Winiarski <[email protected]> --- drivers/gpu/drm/xe/xe_pci.c | 17 +++++++++++++++++ drivers/gpu/drm/xe/xe_pci.h | 3 +++ 2 files changed, 20 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c index aeae675c912b7..3e7b03c847a42 100644 --- a/drivers/gpu/drm/xe/xe_pci.c +++ b/drivers/gpu/drm/xe/xe_pci.c @@ -1224,6 +1224,23 @@ static struct pci_driver xe_pci_driver = { #endif }; +/** + * xe_pci_get_pf_xe_device() - Get PF &xe_device. + * @pdev: the VF &pci_dev device + * + * Return: pointer to PF &xe_device, NULL otherwise. + */ +struct xe_device *xe_pci_get_pf_xe_device(struct pci_dev *pdev) +{ + struct drm_device *drm; + + drm = pci_iov_get_pf_drvdata(pdev, &xe_pci_driver); + if (IS_ERR(drm)) + return NULL; + + return to_xe_device(drm); +} + int xe_register_pci_driver(void) { return pci_register_driver(&xe_pci_driver); diff --git a/drivers/gpu/drm/xe/xe_pci.h b/drivers/gpu/drm/xe/xe_pci.h index 611c1209b14cc..2bb2e486756db 100644 --- a/drivers/gpu/drm/xe/xe_pci.h +++ b/drivers/gpu/drm/xe/xe_pci.h @@ -6,6 +6,9 @@ #ifndef _XE_PCI_H_ #define _XE_PCI_H_ +struct pci_dev; + +struct xe_device *xe_pci_get_pf_xe_device(struct pci_dev *pdev); int xe_register_pci_driver(void); void xe_unregister_pci_driver(void); -- 2.50.1
