static const struct device_type pci_epf_type;
/**
+ * pci_epf_type_add_cfs() - Help function drivers to expose function specific
+ * attributes in configfs
+ * @epf: the EPF device that has to be configured using configfs
+ * @group: the parent configfs group (corresponding to entries in
+ * pci_epf_device_id)
+ *
+ * Invoke to expose function specific attributes in configfs. If the function
+ * driver does not have anything to expose (attributes configured by user),
+ * return NULL.
+ */
+struct config_group *pci_epf_type_add_cfs(struct pci_epf *epf,
+ struct config_group *group)
+{
+ struct config_group *epf_type_group;
+
+ if (!epf->driver) {
+ dev_err(&epf->dev, "epf device not bound to driver\n");
+ return NULL;
+ }
+
+ if (!epf->driver->ops->add_cfs)
+ return NULL;
+
+ mutex_lock(&epf->lock);
+ epf_type_group = epf->driver->ops->add_cfs(epf, group);
+ mutex_unlock(&epf->lock);
+
+ return epf_type_group;
+}
+EXPORT_SYMBOL_GPL(pci_epf_type_add_cfs);
+
+/**
* pci_epf_unbind() - Notify the function driver that the binding between the
* EPF device and EPC device has been lost
* @epf: the EPF device which has lost the binding with the EPC device
* @bind: ops to perform when a EPC device has been bound to EPF device
* @unbind: ops to perform when a binding has been lost between a EPC device
* and EPF device
+ * @add_cfs: ops to initialize function specific configfs attributes
*/
struct pci_epf_ops {
int (*bind)(struct pci_epf *epf);
void (*unbind)(struct pci_epf *epf);
+ struct config_group *(*add_cfs)(struct pci_epf *epf,
+ struct config_group *group);
};
/**
enum pci_epc_interface_type type);
int pci_epf_bind(struct pci_epf *epf);
void pci_epf_unbind(struct pci_epf *epf);
+struct config_group *pci_epf_type_add_cfs(struct pci_epf *epf,
+ struct config_group *group);
#endif /* __LINUX_PCI_EPF_H */