2 files changed, 39 insertions, 0 deletions
diff --git a/include/linux/dibs.h b/include/linux/dibs.h
index 7bedeaf52c1b..c12db19c98c0 100644
--- a/include/linux/dibs.h
+++ b/include/linux/dibs.h
@@ -9,6 +9,7 @@
 #ifndef _DIBS_H
 #define _DIBS_H
 
+#include <linux/device.h>
 /* DIBS - Direct Internal Buffer Sharing - concept
  * -----------------------------------------------
  * In the case of multiple system sharing the same hardware, dibs fabrics can
@@ -62,4 +63,41 @@ int dibs_register_client(struct dibs_client *client);
  */
 int dibs_unregister_client(struct dibs_client *client);
 
+/* DIBS devices
+ * ------------
+ */
+struct dibs_dev {
+	struct list_head list;
+};
+
+/* ------- End of client-only functions ----------- */
+
+/*
+ * Functions to be called by dibs device drivers:
+ */
+/**
+ * dibs_dev_alloc() - allocate and reference device structure
+ *
+ * The following fields will be valid upon successful return: dev
+ * NOTE: Use put_device(dibs_get_dev(@dibs)) to give up your reference instead
+ * of freeing @dibs @dev directly once you have successfully called this
+ * function.
+ * Return: Pointer to dibs device structure
+ */
+struct dibs_dev *dibs_dev_alloc(void);
+/**
+ * dibs_dev_add() - register with dibs layer and all clients
+ * @dibs: dibs device
+ *
+ * The following fields must be valid upon entry: dev, ops, drv_priv
+ * All fields will be valid upon successful return.
+ * Return: zero on success
+ */
+int dibs_dev_add(struct dibs_dev *dibs);
+/**
+ * dibs_dev_del() - unregister from dibs layer and all clients
+ * @dibs: dibs device
+ */
+void dibs_dev_del(struct dibs_dev *dibs);
+
 #endif	/* _DIBS_H */
diff --git a/include/linux/ism.h b/include/linux/ism.h
index 8358b4cd7ba6..9a53d3c48c16 100644
--- a/include/linux/ism.h
+++ b/include/linux/ism.h
@@ -30,6 +30,7 @@ struct ism_dev {
 	spinlock_t lock; /* protects the ism device */
 	spinlock_t cmd_lock; /* serializes cmds */
 	struct list_head list;
+	struct dibs_dev *dibs;
 	struct pci_dev *pdev;
 
 	struct ism_sba *sba;