From 3038e353cfaf548eb94f02b172b9dbe412abd24c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Kristian=20H=C3=B8gsberg?= Date: Tue, 19 Dec 2006 19:58:27 -0500 Subject: firewire: Add core firewire stack. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Kristian Høgsberg Signed-off-by: Stefan Richter --- drivers/firewire/fw-topology.h | 84 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 drivers/firewire/fw-topology.h (limited to 'drivers/firewire/fw-topology.h') diff --git a/drivers/firewire/fw-topology.h b/drivers/firewire/fw-topology.h new file mode 100644 index 00000000000..7582d6e16cb --- /dev/null +++ b/drivers/firewire/fw-topology.h @@ -0,0 +1,84 @@ +/* -*- c-basic-offset: 8 -*- + * + * fw-topology.h -- Incremental bus scan, based on bus topology + * + * Copyright (C) 2003-2006 Kristian Hoegsberg + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef __fw_topology_h +#define __fw_topology_h + +enum { + FW_NODE_CREATED = 0x00, + FW_NODE_UPDATED = 0x01, + FW_NODE_DESTROYED = 0x02, + FW_NODE_LINK_ON = 0x03, + FW_NODE_LINK_OFF = 0x04 +}; + +struct fw_port { + struct fw_node *node; + unsigned speed : 3; /* S100, S200, ... S3200 */ +}; + +struct fw_node { + u16 node_id; + u8 color; + u8 port_count; + unsigned link_on : 1; + unsigned initiated_reset : 1; + unsigned b_path : 1; + u8 phy_speed; /* As in the self ID packet. */ + u8 max_speed; /* Minimum of all phy-speeds and port speeds on + * the path from the local node to this node. */ + + atomic_t ref_count; + + /* For serializing node topology into a list. */ + struct list_head link; + + /* Upper layer specific data. */ + void *data; + + struct fw_port ports[0]; +}; + +extern inline struct fw_node * +fw_node(struct list_head *l) +{ + return list_entry (l, struct fw_node, link); +} + +extern inline struct fw_node * +fw_node_get(struct fw_node *node) +{ + atomic_inc(&node->ref_count); + + return node; +} + +extern inline void +fw_node_put(struct fw_node *node) +{ + if (atomic_dec_and_test(&node->ref_count)) + kfree(node); +} + +void +fw_destroy_nodes(struct fw_card *card); + +#endif -- cgit v1.2.3