+/* Write the BROADCAST_CHANNEL as per IEEE1394a 8.3.2.3.11 and 8.4.2.3. This
+ * seems like an optional service but in the end it is practically mandatory
+ * as a consequence of these clauses.
+ *
+ * Note that we cannot do a broadcast write to all nodes at once because some
+ * pre-1394a devices would hang. */
+static void nodemgr_irm_write_bc(struct node_entry *ne, int generation)
+{
+ const u64 bc_addr = (CSR_REGISTER_BASE | CSR_BROADCAST_CHANNEL);
+ quadlet_t bc_remote, bc_local;
+ int ret;
+
+ if (!ne->host->is_irm || ne->generation != generation ||
+ ne->nodeid == ne->host->node_id)
+ return;
+
+ bc_local = cpu_to_be32(ne->host->csr.broadcast_channel);
+
+ /* Check if the register is implemented and 1394a compliant. */
+ ret = hpsb_read(ne->host, ne->nodeid, generation, bc_addr, &bc_remote,
+ sizeof(bc_remote));
+ if (!ret && bc_remote & cpu_to_be32(0x80000000) &&
+ bc_remote != bc_local)
+ hpsb_node_write(ne, bc_addr, &bc_local, sizeof(bc_local));
+}
+
+