2 * Copyright (C) 2000 Andreas E. Bombe
3 * 2001 Ben Collins <bcollins@debian.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software Foundation,
17 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 #ifndef _IEEE1394_NODEMGR_H
21 #define _IEEE1394_NODEMGR_H
23 #define CONFIG_ROM_BUS_INFO_LENGTH(q) ((q) >> 24)
24 #define CONFIG_ROM_BUS_CRC_LENGTH(q) (((q) >> 16) & 0xff)
25 #define CONFIG_ROM_BUS_CRC(q) ((q) & 0xffff)
27 #define CONFIG_ROM_ROOT_LENGTH(q) ((q) >> 16)
28 #define CONFIG_ROM_ROOT_CRC(q) ((q) & 0xffff)
30 #define CONFIG_ROM_DIRECTORY_LENGTH(q) ((q) >> 16)
31 #define CONFIG_ROM_DIRECTORY_CRC(q) ((q) & 0xffff)
33 #define CONFIG_ROM_LEAF_LENGTH(q) ((q) >> 16)
34 #define CONFIG_ROM_LEAF_CRC(q) ((q) & 0xffff)
36 #define CONFIG_ROM_DESCRIPTOR_TYPE(q) ((q) >> 24)
37 #define CONFIG_ROM_DESCRIPTOR_SPECIFIER_ID(q) ((q) & 0xffffff)
38 #define CONFIG_ROM_DESCRIPTOR_WIDTH(q) ((q) >> 28)
39 #define CONFIG_ROM_DESCRIPTOR_CHAR_SET(q) (((q) >> 16) & 0xfff)
40 #define CONFIG_ROM_DESCRIPTOR_LANG(q) ((q) & 0xffff)
42 #define CONFIG_ROM_KEY_ID_MASK 0x3f
43 #define CONFIG_ROM_KEY_TYPE_MASK 0xc0
44 #define CONFIG_ROM_KEY_TYPE_IMMEDIATE 0x00
45 #define CONFIG_ROM_KEY_TYPE_OFFSET 0x40
46 #define CONFIG_ROM_KEY_TYPE_LEAF 0x80
47 #define CONFIG_ROM_KEY_TYPE_DIRECTORY 0xc0
49 #define CONFIG_ROM_KEY(q) ((q) >> 24)
50 #define CONFIG_ROM_VALUE(q) ((q) & 0xffffff)
52 #define CONFIG_ROM_VENDOR_ID 0x03
53 #define CONFIG_ROM_MODEL_ID 0x17
54 #define CONFIG_ROM_NODE_CAPABILITES 0x0C
55 #define CONFIG_ROM_UNIT_DIRECTORY 0xd1
56 #define CONFIG_ROM_SPECIFIER_ID 0x12
57 #define CONFIG_ROM_UNIT_SW_VERSION 0x13
58 #define CONFIG_ROM_DESCRIPTOR_LEAF 0x81
59 #define CONFIG_ROM_DESCRIPTOR_DIRECTORY 0xc1
61 /* '1' '3' '9' '4' in ASCII */
62 #define IEEE1394_BUSID_MAGIC 0x31333934
64 /* This is the start of a Node entry structure. It should be a stable API
65 * for which to gather info from the Node Manager about devices attached
68 u8 irmc; /* Iso Resource Manager Capable */
69 u8 cmc; /* Cycle Master Capable */
70 u8 isc; /* Iso Capable */
71 u8 bmc; /* Bus Master Capable */
72 u8 pmc; /* Power Manager Capable (PNP spec) */
73 u8 cyc_clk_acc; /* Cycle clock accuracy */
74 u8 generation; /* Incremented when configrom changes */
75 u8 lnkspd; /* Link speed */
76 u16 max_rec; /* Maximum packet size node can receive */
79 #define UNIT_DIRECTORY_VENDOR_ID 0x01
80 #define UNIT_DIRECTORY_MODEL_ID 0x02
81 #define UNIT_DIRECTORY_SPECIFIER_ID 0x04
82 #define UNIT_DIRECTORY_VERSION 0x08
83 #define UNIT_DIRECTORY_VENDOR_TEXT 0x10
84 #define UNIT_DIRECTORY_MODEL_TEXT 0x20
87 * A unit directory corresponds to a protocol supported by the
88 * node. If a node supports eg. IP/1394 and AV/C, its config rom has a
89 * unit directory for each of these protocols.
91 * Unit directories appear on two types of lists: for each node we
92 * maintain a list of the unit directories found in its config rom and
93 * for each driver we maintain a list of the unit directories
94 * (ie. devices) the driver manages.
96 struct unit_directory {
97 struct node_entry *ne; /* The node which this directory belongs to */
98 octlet_t address; /* Address of the unit directory on the node */
99 u8 flags; /* Indicates which entries were read */
101 const char *vendor_name;
102 int vendor_name_size;
104 const char *model_name;
106 quadlet_t specifier_id;
109 struct hpsb_protocol_driver *driver;
112 /* For linking the nodes managed by the driver, or unmanaged nodes */
113 struct list_head driver_list;
115 /* For linking directories belonging to a node */
116 struct list_head node_list;
118 int count; /* Number of quadlets */
119 quadlet_t quadlets[0];
123 struct list_head list;
124 u64 guid; /* GUID of this node */
125 struct hpsb_host *host; /* Host this node is attached to */
126 nodeid_t nodeid; /* NodeID */
127 struct bus_options busopt; /* Bus Options */
128 unsigned int generation; /* Synced with hpsb generation */
130 /* The following is read from the config rom */
133 struct list_head unit_directories;
135 const char *vendor_name;
136 quadlet_t quadlets[0];
139 static inline int hpsb_node_entry_valid(struct node_entry *ne)
141 return ne->generation == get_hpsb_generation(ne->host);
145 * Returns a node entry (which has its reference count incremented) or NULL if
146 * the GUID in question is not known. Getting a valid entry does not mean that
147 * the node with this GUID is currently accessible (might be powered down).
149 struct node_entry *hpsb_guid_get_entry(u64 guid);
151 /* Same as above, but use the nodeid to get an node entry. This is not
152 * fool-proof by itself, since the nodeid can change. */
153 struct node_entry *hpsb_nodeid_get_entry(nodeid_t nodeid);
156 * If the entry refers to a local host, this function will return the pointer
157 * to the hpsb_host structure. It will return NULL otherwise. Once you have
158 * established it is a local host, you can use that knowledge from then on (the
159 * GUID won't wander to an external node). */
160 struct hpsb_host *hpsb_get_host_by_ne(struct node_entry *ne);
163 * This will fill in the given, pre-initialised hpsb_packet with the current
164 * information from the node entry (host, node ID, generation number). It will
165 * return false if the node owning the GUID is not accessible (and not modify the
166 * hpsb_packet) and return true otherwise.
168 * Note that packet sending may still fail in hpsb_send_packet if a bus reset
169 * happens while you are trying to set up the packet (due to obsolete generation
170 * number). It will at least reliably fail so that you don't accidentally and
171 * unknowingly send your packet to the wrong node.
173 void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *pkt);
175 int hpsb_node_read(struct node_entry *ne, u64 addr,
176 quadlet_t *buffer, size_t length);
177 int hpsb_node_write(struct node_entry *ne, u64 addr,
178 quadlet_t *buffer, size_t length);
179 int hpsb_node_lock(struct node_entry *ne, u64 addr,
180 int extcode, quadlet_t *data, quadlet_t arg);
183 void init_ieee1394_nodemgr(int disable_hotplug);
184 void cleanup_ieee1394_nodemgr(void);
186 #endif /* _IEEE1394_NODEMGR_H */