1 /*
2 * Copyright (C) 2000 Andreas E. Bombe
3 * 2001 Ben Collins <bcollins@debian.org>
4 *
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.
9 *
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.
14 *
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.
18 */
19
20 #ifndef _IEEE1394_NODEMGR_H
21 #define _IEEE1394_NODEMGR_H
22
23 #include <linux/device.h>
24 #include <asm/types.h>
25
26 #include "ieee1394_core.h"
27 #include "ieee1394_types.h"
28
29 struct csr1212_csr;
30 struct csr1212_keyval;
31 struct hpsb_host;
32 struct ieee1394_device_id;
33
34 /* '1' '3' '9' '4' in ASCII */
35 #define IEEE1394_BUSID_MAGIC __constant_cpu_to_be32(0x31333934)
36
37 /* This is the start of a Node entry structure. It should be a stable API
38 * for which to gather info from the Node Manager about devices attached
39 * to the bus. */
40 struct bus_options {
41 u8 irmc; /* Iso Resource Manager Capable */
42 u8 cmc; /* Cycle Master Capable */
43 u8 isc; /* Iso Capable */
44 u8 bmc; /* Bus Master Capable */
45 u8 pmc; /* Power Manager Capable (PNP spec) */
46 u8 cyc_clk_acc; /* Cycle clock accuracy */
47 u8 max_rom; /* Maximum block read supported in the CSR */
48 u8 generation; /* Incremented when configrom changes */
49 u8 lnkspd; /* Link speed */
50 u16 max_rec; /* Maximum packet size node can receive */
51 };
52
53 #define UNIT_DIRECTORY_VENDOR_ID 0x01
54 #define UNIT_DIRECTORY_MODEL_ID 0x02
55 #define UNIT_DIRECTORY_SPECIFIER_ID 0x04
56 #define UNIT_DIRECTORY_VERSION 0x08
57 #define UNIT_DIRECTORY_HAS_LUN_DIRECTORY 0x10
58 #define UNIT_DIRECTORY_LUN_DIRECTORY 0x20
59 #define UNIT_DIRECTORY_HAS_LUN 0x40
60
61 /*
62 * A unit directory corresponds to a protocol supported by the
63 * node. If a node supports eg. IP/1394 and AV/C, its config rom has a
64 * unit directory for each of these protocols.
65 */
66 struct unit_directory {
67 struct node_entry *ne; /* The node which this directory belongs to */
68 octlet_t address; /* Address of the unit directory on the node */
69 u8 flags; /* Indicates which entries were read */
70
71 quadlet_t vendor_id;
72 struct csr1212_keyval *vendor_name_kv;
73
74 quadlet_t model_id;
75 struct csr1212_keyval *model_name_kv;
76 quadlet_t specifier_id;
77 quadlet_t version;
78 quadlet_t directory_id;
79
80 unsigned int id;
81
82 int ignore_driver;
83
84 int length; /* Number of quadlets */
85
86 struct device device;
87 struct device unit_dev;
88
89 struct csr1212_keyval *ud_kv;
90 u32 lun; /* logical unit number immediate value */
91 };
92
93 struct node_entry {
94 u64 guid; /* GUID of this node */
95 u32 guid_vendor_id; /* Top 24bits of guid */
96
97 struct hpsb_host *host; /* Host this node is attached to */
98 nodeid_t nodeid; /* NodeID */
99 struct bus_options busopt; /* Bus Options */
100 int needs_probe;
101 unsigned int generation; /* Synced with hpsb generation */
102
103 /* The following is read from the config rom */
104 u32 vendor_id;
105 struct csr1212_keyval *vendor_name_kv;
106
107 u32 capabilities;
108
109 struct device device;
110 struct device node_dev;
111
112 /* Means this node is not attached anymore */
113 int in_limbo;
114
115 struct csr1212_csr *csr;
116 };
117
118 struct hpsb_protocol_driver {
119 /* The name of the driver, e.g. SBP2 or IP1394 */
120 const char *name;
121
122 /*
123 * The device id table describing the protocols and/or devices
124 * supported by this driver. This is used by the nodemgr to
125 * decide if a driver could support a given node, but the
126 * probe function below can implement further protocol
127 * dependent or vendor dependent checking.
128 */
129 struct ieee1394_device_id *id_table;
130
131 /*
132 * The update function is called when the node has just
133 * survived a bus reset, i.e. it is still present on the bus.
134 * However, it may be necessary to reestablish the connection
135 * or login into the node again, depending on the protocol. If the
136 * probe fails (returns non-zero), we unbind the driver from this
137 * device.
138 */
139 int (*update)(struct unit_directory *ud);
140
141 /* Our LDM structure */
142 struct device_driver driver;
143 };
144
145 int __hpsb_register_protocol(struct hpsb_protocol_driver *, struct module *);
146 static inline int hpsb_register_protocol(struct hpsb_protocol_driver *driver)
147 {
148 return __hpsb_register_protocol(driver, THIS_MODULE);
149 }
150
151 void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver);
152
153 static inline int hpsb_node_entry_valid(struct node_entry *ne)
154 {
155 return ne->generation == get_hpsb_generation(ne->host);
156 }
157 void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *packet);
158 int hpsb_node_write(struct node_entry *ne, u64 addr,
159 quadlet_t *buffer, size_t length);
160 int nodemgr_for_each_host(void *data, int (*cb)(struct hpsb_host *, void *));
161
162 int init_ieee1394_nodemgr(void);
163 void cleanup_ieee1394_nodemgr(void);
164
165 /* The template for a host device */
166 extern struct device nodemgr_dev_template_host;
167
168 /* Bus attributes we export */
169 extern struct bus_attribute *const fw_bus_attrs[];
170
171 #endif /* _IEEE1394_NODEMGR_H */
172
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