tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2003-2006 Kristian Hoegsberg <krh@bitplanet.net>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#ifndef __fw_topology_h
20#define __fw_topology_h
21
22enum {
23 FW_NODE_CREATED = 0x00,
24 FW_NODE_UPDATED = 0x01,
25 FW_NODE_DESTROYED = 0x02,
26 FW_NODE_LINK_ON = 0x03,
27 FW_NODE_LINK_OFF = 0x04,
28};
29
30struct fw_node {
31 u16 node_id;
32 u8 color;
33 u8 port_count;
34 u8 link_on : 1;
35 u8 initiated_reset : 1;
36 u8 b_path : 1;
37 u8 phy_speed : 2; /* As in the self ID packet. */
38 u8 max_speed : 2; /* Minimum of all phy-speeds on the path from the
39 * local node to this node. */
40 u8 max_depth : 4; /* Maximum depth to any leaf node */
41 u8 max_hops : 4; /* Max hops in this sub tree */
42 atomic_t ref_count;
43
44 /* For serializing node topology into a list. */
45 struct list_head link;
46
47 /* Upper layer specific data. */
48 void *data;
49
50 struct fw_node *ports[0];
51};
52
53static inline struct fw_node *
54fw_node_get(struct fw_node *node)
55{
56 atomic_inc(&node->ref_count);
57
58 return node;
59}
60
61static inline void
62fw_node_put(struct fw_node *node)
63{
64 if (atomic_dec_and_test(&node->ref_count))
65 kfree(node);
66}
67
68void
69fw_destroy_nodes(struct fw_card *card);
70
71int
72fw_compute_block_crc(u32 *block);
73
74
75#endif /* __fw_topology_h */