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/*
* Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net>
*
* 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,
FW_NODE_UPDATED,
FW_NODE_DESTROYED,
FW_NODE_LINK_ON,
FW_NODE_LINK_OFF,
FW_NODE_INITIATED_RESET,
};
struct fw_node {
u16 node_id;
u8 color;
u8 port_count;
u8 link_on : 1;
u8 initiated_reset : 1;
u8 b_path : 1;
u8 phy_speed : 2; /* As in the self ID packet. */
u8 max_speed : 2; /* Minimum of all phy-speeds on the path from the
* local node to this node. */
u8 max_depth : 4; /* Maximum depth to any leaf node */
u8 max_hops : 4; /* Max hops in this sub tree */
atomic_t ref_count;
/* For serializing node topology into a list. */
struct list_head link;
/* Upper layer specific data. */
void *data;
struct fw_node *ports[0];
};
static inline struct fw_node *
fw_node_get(struct fw_node *node)
{
atomic_inc(&node->ref_count);
return node;
}
static 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);
int
fw_compute_block_crc(u32 *block);
#endif /* __fw_topology_h */
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