diff options
| author | Michał Winiarski <michal.winiarski@intel.com> | 2025-11-27 10:39:32 +0100 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2025-12-01 09:42:37 +0100 |
| commit | 5be29ebe9f059f2afadd2a725e12aa25e900b6fb (patch) | |
| tree | b192d9a0a944c8e883b5e20cd237d2a1c73da3a1 | |
| parent | 73834d03a523e09d64e7978265f1edd33640bf3f (diff) | |
drm/xe/pci: Introduce a helper to allow VF access to PF xe_device
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.
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20251127093934.1462188-3-michal.winiarski@intel.com
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
(cherry picked from commit 8b3cce3ad9c78ce3dae1c178f99352d50e12a3c0)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pci.c | 17 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_pci.h | 3 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_pci.c b/drivers/gpu/drm/xe/xe_pci.c index bbe6f8e65844..0e39a0255b99 100644 --- a/drivers/gpu/drm/xe/xe_pci.c +++ b/drivers/gpu/drm/xe/xe_pci.c @@ -1223,6 +1223,23 @@ 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 611c1209b14c..11bcc5fe2c5b 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 |