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 Reviewed-by: Michal Wajdeczko --- 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 cd03b4b3ebdbd..b27f6364faa0f 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_to_pf_device() - Get PF &xe_device. + * @pdev: the VF &pci_dev device + * + * Return: pointer to PF &xe_device, NULL otherwise. + */ +struct xe_device *xe_pci_to_pf_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..11bcc5fe2c5b9 100644 --- a/drivers/gpu/drm/xe/xe_pci.h +++ b/drivers/gpu/drm/xe/xe_pci.h @@ -6,7 +6,10 @@ #ifndef _XE_PCI_H_ #define _XE_PCI_H_ +struct pci_dev; + int xe_register_pci_driver(void); void xe_unregister_pci_driver(void); +struct xe_device *xe_pci_to_pf_device(struct pci_dev *pdev); #endif -- 2.51.2