aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/firewire/fw-topology.h
blob: addb9f8ea776f1196dd7f65b6f75cd3695d13425 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
/*
 * 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 */