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 #include <linux/device.h>
24 #include <asm/types.h>
26 #include "ieee1394_core.h"
27 #include "ieee1394_types.h"
30 struct csr1212_keyval;
32 struct ieee1394_device_id;
34 /* '1' '3' '9' '4' in ASCII */
35 #define IEEE1394_BUSID_MAGIC __constant_cpu_to_be32(0x31333934)
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
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 */
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
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.
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 */
72 struct csr1212_keyval *vendor_name_kv;
75 struct csr1212_keyval *model_name_kv;
76 quadlet_t specifier_id;
83 int length; /* Number of quadlets */
86 struct class_device class_dev;
88 struct csr1212_keyval *ud_kv;
89 u32 lun; /* logical unit number immediate value */
93 u64 guid; /* GUID of this node */
94 u32 guid_vendor_id; /* Top 24bits of guid */
96 struct hpsb_host *host; /* Host this node is attached to */
97 nodeid_t nodeid; /* NodeID */
98 struct bus_options busopt; /* Bus Options */
100 unsigned int generation; /* Synced with hpsb generation */
102 /* The following is read from the config rom */
104 struct csr1212_keyval *vendor_name_kv;
108 struct device device;
109 struct class_device class_dev;
111 /* Means this node is not attached anymore */
114 struct csr1212_csr *csr;
117 struct hpsb_protocol_driver {
118 /* The name of the driver, e.g. SBP2 or IP1394 */
122 * The device id table describing the protocols and/or devices
123 * supported by this driver. This is used by the nodemgr to
124 * decide if a driver could support a given node, but the
125 * probe function below can implement further protocol
126 * dependent or vendor dependent checking.
128 struct ieee1394_device_id *id_table;
131 * The update function is called when the node has just
132 * survived a bus reset, i.e. it is still present on the bus.
133 * However, it may be necessary to reestablish the connection
134 * or login into the node again, depending on the protocol. If the
135 * probe fails (returns non-zero), we unbind the driver from this
138 int (*update)(struct unit_directory *ud);
140 /* Our LDM structure */
141 struct device_driver driver;
144 int __hpsb_register_protocol(struct hpsb_protocol_driver *, struct module *);
145 static inline int hpsb_register_protocol(struct hpsb_protocol_driver *driver)
147 return __hpsb_register_protocol(driver, THIS_MODULE);
150 void hpsb_unregister_protocol(struct hpsb_protocol_driver *driver);
152 static inline int hpsb_node_entry_valid(struct node_entry *ne)
154 return ne->generation == get_hpsb_generation(ne->host);
158 * This will fill in the given, pre-initialised hpsb_packet with the current
159 * information from the node entry (host, node ID, generation number). It will
160 * return false if the node owning the GUID is not accessible (and not modify
161 * the hpsb_packet) and return true otherwise.
163 * Note that packet sending may still fail in hpsb_send_packet if a bus reset
164 * happens while you are trying to set up the packet (due to obsolete generation
165 * number). It will at least reliably fail so that you don't accidentally and
166 * unknowingly send your packet to the wrong node.
168 void hpsb_node_fill_packet(struct node_entry *ne, struct hpsb_packet *pkt);
170 int hpsb_node_read(struct node_entry *ne, u64 addr,
171 quadlet_t *buffer, size_t length);
172 int hpsb_node_write(struct node_entry *ne, u64 addr,
173 quadlet_t *buffer, size_t length);
174 int hpsb_node_lock(struct node_entry *ne, u64 addr,
175 int extcode, quadlet_t *data, quadlet_t arg);
177 /* Iterate the hosts, calling a given function with supplied data for each
179 int nodemgr_for_each_host(void *__data, int (*cb)(struct hpsb_host *, void *));
181 int init_ieee1394_nodemgr(void);
182 void cleanup_ieee1394_nodemgr(void);
184 /* The template for a host device */
185 extern struct device nodemgr_dev_template_host;
187 /* Bus attributes we export */
188 extern struct bus_attribute *const fw_bus_attrs[];
190 #endif /* _IEEE1394_NODEMGR_H */