2 * Copyright (C) 2005-2006 Kristian Hoegsberg <krh@bitplanet.net>
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.
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.
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.
22 #include <linux/device.h>
24 #include <linux/idr.h>
25 #include <linux/kernel.h>
26 #include <linux/list.h>
27 #include <linux/mutex.h>
28 #include <linux/rwsem.h>
29 #include <linux/sysfs.h>
30 #include <linux/types.h>
31 #include <linux/workqueue.h>
33 #include <asm/atomic.h>
35 enum fw_device_state {
36 FW_DEVICE_INITIALIZING,
42 struct fw_attribute_group {
43 struct attribute_group *groups[2];
44 struct attribute_group group;
45 struct attribute *attrs[11];
52 * Note, fw_device.generation always has to be read before fw_device.node_id.
53 * Use SMP memory barriers to ensure this. Otherwise requests will be sent
54 * to an outdated node_id if the generation was updated in the meantime due
57 * Likewise, fw-core will take care to update .node_id before .generation so
58 * that whenever fw_device.generation is current WRT the actual bus generation,
59 * fw_device.node_id is guaranteed to be current too.
61 * The same applies to fw_device.card->node_id vs. fw_device.generation.
63 * fw_device.config_rom and fw_device.config_rom_length may be accessed during
64 * the lifetime of any fw_unit belonging to the fw_device, before device_del()
65 * was called on the last fw_unit. Alternatively, they may be accessed while
66 * holding fw_device_rwsem.
77 struct mutex client_list_mutex;
78 struct list_head client_list;
81 size_t config_rom_length;
82 int config_rom_retries;
84 unsigned bc_implemented:2;
86 struct delayed_work work;
87 struct fw_attribute_group attribute_group;
90 static inline struct fw_device *fw_device(struct device *dev)
92 return container_of(dev, struct fw_device, device);
95 static inline int fw_device_is_shutdown(struct fw_device *device)
97 return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
100 static inline struct fw_device *fw_device_get(struct fw_device *device)
102 get_device(&device->device);
107 static inline void fw_device_put(struct fw_device *device)
109 put_device(&device->device);
112 struct fw_device *fw_device_get_by_devt(dev_t devt);
113 int fw_device_enable_phys_dma(struct fw_device *device);
114 void fw_device_set_broadcast_channel(struct fw_device *device, int generation);
116 void fw_device_cdev_update(struct fw_device *device);
117 void fw_device_cdev_remove(struct fw_device *device);
119 extern struct rw_semaphore fw_device_rwsem;
120 extern struct idr fw_device_idr;
121 extern int fw_cdev_major;
124 * fw_unit.directory must not be accessed after device_del(&fw_unit.device).
127 struct device device;
129 struct fw_attribute_group attribute_group;
132 static inline struct fw_unit *fw_unit(struct device *dev)
134 return container_of(dev, struct fw_unit, device);
137 static inline struct fw_unit *fw_unit_get(struct fw_unit *unit)
139 get_device(&unit->device);
144 static inline void fw_unit_put(struct fw_unit *unit)
146 put_device(&unit->device);
149 #define CSR_OFFSET 0x40
150 #define CSR_LEAF 0x80
151 #define CSR_DIRECTORY 0xc0
153 #define CSR_DESCRIPTOR 0x01
154 #define CSR_VENDOR 0x03
155 #define CSR_HARDWARE_VERSION 0x04
156 #define CSR_NODE_CAPABILITIES 0x0c
157 #define CSR_UNIT 0x11
158 #define CSR_SPECIFIER_ID 0x12
159 #define CSR_VERSION 0x13
160 #define CSR_DEPENDENT_INFO 0x14
161 #define CSR_MODEL 0x17
162 #define CSR_INSTANCE 0x18
163 #define CSR_DIRECTORY_ID 0x20
165 struct fw_csr_iterator {
170 void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 *p);
171 int fw_csr_iterator_next(struct fw_csr_iterator *ci,
172 int *key, int *value);
174 #define FW_MATCH_VENDOR 0x0001
175 #define FW_MATCH_MODEL 0x0002
176 #define FW_MATCH_SPECIFIER_ID 0x0004
177 #define FW_MATCH_VERSION 0x0008
179 struct fw_device_id {
189 struct device_driver driver;
190 /* Called when the parent device sits through a bus reset. */
191 void (*update) (struct fw_unit *unit);
192 const struct fw_device_id *id_table;
195 static inline struct fw_driver *fw_driver(struct device_driver *drv)
197 return container_of(drv, struct fw_driver, driver);
200 extern const struct file_operations fw_device_ops;
202 #endif /* __fw_device_h */