diff options
Diffstat (limited to 'drivers/pci/pcie/rcec.c')
| -rw-r--r-- | drivers/pci/pcie/rcec.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/pci/pcie/rcec.c b/drivers/pci/pcie/rcec.c index cdec277cbd62..2c5c552994e4 100644 --- a/drivers/pci/pcie/rcec.c +++ b/drivers/pci/pcie/rcec.c @@ -53,6 +53,18 @@ static int link_rcec_helper(struct pci_dev *dev, void *data) return 0; } +static int walk_rcec_helper(struct pci_dev *dev, void *data) +{ + struct walk_rcec_data *rcec_data = data; + struct pci_dev *rcec = rcec_data->rcec; + + if ((pci_pcie_type(dev) == PCI_EXP_TYPE_RC_END) && + rcec_assoc_rciep(rcec, dev)) + rcec_data->user_callback(dev, rcec_data->user_data); + + return 0; +} + static void walk_rcec(int (*cb)(struct pci_dev *dev, void *data), void *userdata) { @@ -109,6 +121,31 @@ void pcie_link_rcec(struct pci_dev *rcec) walk_rcec(link_rcec_helper, &rcec_data); } +/** + * pcie_walk_rcec - Walk RCiEP devices associating with RCEC and call callback. + * @rcec: RCEC whose RCiEP devices should be walked + * @cb: Callback to be called for each RCiEP device found + * @userdata: Arbitrary pointer to be passed to callback + * + * Walk the given RCEC. Call the callback on each RCiEP found. + * + * If @cb returns anything other than 0, break out. + */ +void pcie_walk_rcec(struct pci_dev *rcec, int (*cb)(struct pci_dev *, void *), + void *userdata) +{ + struct walk_rcec_data rcec_data; + + if (!rcec->rcec_ea) + return; + + rcec_data.rcec = rcec; + rcec_data.user_callback = cb; + rcec_data.user_data = userdata; + + walk_rcec(walk_rcec_helper, &rcec_data); +} + void pci_rcec_init(struct pci_dev *dev) { struct rcec_ea *rcec_ea; |