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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-10 16:29:36 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-10 16:30:08 -0400
commit9b6a51746ffe8d619f1097675d2dc5e303470024 (patch)
tree52668d7adc6f5c1d347d65072878cf1f82670364 /drivers/firewire/fw-topology.h
parentfc0b60f1dc311a2f7443ce46305edd287b2d8947 (diff)
parentd79406dd140a3e6eed6f26b17f0c6620fe30b50c (diff)
Merge branch 'juju' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'juju' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (138 commits) firewire: Convert OHCI driver to use standard goto unwinding for error handling. firewire: Always use parens with sizeof. firewire: Drop single buffer request support. firewire: Add a comment to describe why we split the sg list. firewire: Return SCSI_MLQUEUE_HOST_BUSY for out of memory cases in queuecommand. firewire: Handle the last few DMA mapping error cases. firewire: Allocate scsi_host up front and allocate the sbp2_device as hostdata. firewire: Provide module aliase for backwards compatibility. firewire: Add to fw-core-y instead of assigning fw-core-objs in Makefile. firewire: Break out shared IEEE1394 constant to separate header file. firewire: Use linux/*.h instead of asm/*.h header files. firewire: Uppercase most macro names. firewire: Coding style cleanup: no spaces after function names. firewire: Convert card_rwsem to a regular mutex. firewire: Clean up comment style. firewire: Use lib/ implementation of CRC ITU-T. CRC ITU-T V.41 firewire: Rename fw-device-cdev.c to fw-cdev.c and move header to include/linux. firewire: Future proof the iso ioctls by adding a handle for the iso context. firewire: Add read/write and size annotations to IOC numbers. ... Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/firewire/fw-topology.h')
-rw-r--r--drivers/firewire/fw-topology.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/firewire/fw-topology.h b/drivers/firewire/fw-topology.h
new file mode 100644
index 000000000000..363b6cbcd0b3
--- /dev/null
+++ b/drivers/firewire/fw-topology.h
@@ -0,0 +1,92 @@
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_TOPOLOGY_A = 0x01,
24 FW_TOPOLOGY_B = 0x02,
25 FW_TOPOLOGY_MIXED = 0x03,
26};
27
28enum {
29 FW_NODE_CREATED = 0x00,
30 FW_NODE_UPDATED = 0x01,
31 FW_NODE_DESTROYED = 0x02,
32 FW_NODE_LINK_ON = 0x03,
33 FW_NODE_LINK_OFF = 0x04,
34};
35
36struct fw_port {
37 struct fw_node *node;
38 unsigned speed : 3; /* S100, S200, ... S3200 */
39};
40
41struct fw_node {
42 u16 node_id;
43 u8 color;
44 u8 port_count;
45 unsigned link_on : 1;
46 unsigned initiated_reset : 1;
47 unsigned b_path : 1;
48 u8 phy_speed : 3; /* As in the self ID packet. */
49 u8 max_speed : 5; /* Minimum of all phy-speeds and port speeds on
50 * the path from the local node to this node. */
51 u8 max_depth : 4; /* Maximum depth to any leaf node */
52 u8 max_hops : 4; /* Max hops in this sub tree */
53 atomic_t ref_count;
54
55 /* For serializing node topology into a list. */
56 struct list_head link;
57
58 /* Upper layer specific data. */
59 void *data;
60
61 struct fw_port ports[0];
62};
63
64static inline struct fw_node *
65fw_node(struct list_head *l)
66{
67 return list_entry(l, struct fw_node, link);
68}
69
70static inline struct fw_node *
71fw_node_get(struct fw_node *node)
72{
73 atomic_inc(&node->ref_count);
74
75 return node;
76}
77
78static inline void
79fw_node_put(struct fw_node *node)
80{
81 if (atomic_dec_and_test(&node->ref_count))
82 kfree(node);
83}
84
85void
86fw_destroy_nodes(struct fw_card *card);
87
88int
89fw_compute_block_crc(u32 *block);
90
91
92#endif /* __fw_topology_h */