Add cache activation from passive state

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>

inc/ocf_err.h

@@ -128,6 +128,12 @@ typedef enum {
 
 	/** Core with the uuid already exists */
 	OCF_ERR_CORE_UUID_EXISTS,
+
+	/** Cache initialized with wrong metadata layout */
+	OCF_ERR_METADATA_LAYOUT_MISMATCH,
+
+	/** Cache initialized with wrong cache line size */
+	OCF_ERR_CACHE_LINE_SIZE_MISMATCH,
 } ocf_error_t;
 
 #endif /* __OCF_ERR_H__ */

inc/ocf_mngt.h

@@ -536,6 +536,28 @@ void ocf_mngt_cache_bind(ocf_cache_t cache,
 		struct ocf_mngt_cache_device_config *cfg,
 		ocf_mngt_cache_bind_end_t cmpl, void *priv);
 
+/**
+ * @brief Completion callback of cache activate operation
+ *
+ * @param[in] cache Cache handle
+ * @param[in] priv Callback context
+ * @param[in] error Error code (zero on success)
+ */
+typedef void (*ocf_mngt_cache_activate_end_t)(ocf_cache_t cache,
+		void *priv, int error);
+
+/**
+ * @brief Activate cache instance
+ *
+ * @param[in] cache Cache handle
+ * @param[in] cfg Caching device configuration
+ * @param[in] cmpl Completion callback
+ * @param[in] priv Completion callback context
+ */
+void ocf_mngt_cache_activate(ocf_cache_t cache,
+		struct ocf_mngt_cache_device_config *cfg,
+		ocf_mngt_cache_activate_end_t cmpl, void *priv);
+
 /* Adding and removing cores */
 
 /**