Commit ae16f18a authored by Michal Wajdeczko's avatar Michal Wajdeczko
Browse files

drm/xe/pf: Promote xe_pci_sriov_get_vf_pdev 



In the upcoming patch we would like to use this private helper
during preparation of the sysfs links. Promote it.

Signed-off-by: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: default avatarPiotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patch.msgid.link/20251030222348.186658-15-michal.wajdeczko@intel.com
parent b5b297b9

drivers/gpu/drm/xe/xe_pci_sriov.c

+23 −13
Original line number Diff line number Diff line
@@ -30,18 +30,6 @@ static void pf_reset_vfs(struct xe_device *xe, unsigned int num_vfs) 
		xe_sriov_pf_control_reset_vf(xe, n);

}



static struct pci_dev *xe_pci_pf_get_vf_dev(struct xe_device *xe, unsigned int vf_id)

{

	struct pci_dev *pdev = to_pci_dev(xe->drm.dev);



	xe_assert(xe, IS_SRIOV_PF(xe));



	/* caller must use pci_dev_put() */

	return pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),

			pdev->bus->number,

			pci_iov_virtfn_devfn(pdev, vf_id));

}



static void pf_link_vfs(struct xe_device *xe, int num_vfs)

{

	struct pci_dev *pdev_pf = to_pci_dev(xe->drm.dev);
@@ -60,7 +48,7 @@ static void pf_link_vfs(struct xe_device *xe, int num_vfs) 
	 * enforce correct resume order.

	 */

	for (n = 1; n <= num_vfs; n++) {

		pdev_vf = xe_pci_pf_get_vf_dev(xe, n - 1);

		pdev_vf = xe_pci_sriov_get_vf_pdev(pdev_pf, n);



		/* unlikely, something weird is happening, abort */

		if (!pdev_vf) {
@@ -228,3 +216,25 @@ int xe_pci_sriov_configure(struct pci_dev *pdev, int num_vfs) 


	return ret;

}



/**

 * xe_pci_sriov_get_vf_pdev() - Lookup the VF's PCI device using the VF identifier.

 * @pdev: the PF's &pci_dev

 * @vfid: VF identifier (1-based)

 *

 * The caller must decrement the reference count by calling pci_dev_put().

 *

 * Return: the VF's &pci_dev or NULL if the VF device was not found.

 */

struct pci_dev *xe_pci_sriov_get_vf_pdev(struct pci_dev *pdev, unsigned int vfid)

{

	struct xe_device *xe = pdev_to_xe_device(pdev);



	xe_assert(xe, dev_is_pf(&pdev->dev));

	xe_assert(xe, vfid);

	xe_assert(xe, vfid <= pci_sriov_get_totalvfs(pdev));



	return pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),

					   pdev->bus->number,

					   pci_iov_virtfn_devfn(pdev, vfid - 1));

}

drivers/gpu/drm/xe/xe_pci_sriov.h

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ struct pci_dev; 


#ifdef CONFIG_PCI_IOV

int xe_pci_sriov_configure(struct pci_dev *pdev, int num_vfs);

struct pci_dev *xe_pci_sriov_get_vf_pdev(struct pci_dev *pdev, unsigned int vfid);

#else

static inline int xe_pci_sriov_configure(struct pci_dev *pdev, int num_vfs)

{