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drm/xe/pf: Promote xe_pci_sriov_get_vf_pdev

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

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Link: https://patch.msgid.link/20251030222348.186658-15-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2025-10-30 23:23:45 +01:00
parent b5b297b9e7
commit ae16f18a36
2 changed files with 24 additions and 13 deletions
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36
drivers/gpu/drm/xe/xe_pci_sriov.c
View File

@@ -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));
}

1
drivers/gpu/drm/xe/xe_pci_sriov.h
View File

@@ -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)
{