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.
23 #include <linux/cdev.h>
24 #include <linux/rwsem.h>
25 #include <asm/atomic.h>
27 enum fw_device_state {
28 FW_DEVICE_INITIALIZING,
33 struct fw_attribute_group {
34 struct attribute_group *groups[2];
35 struct attribute_group group;
36 struct attribute *attrs[11];
40 * Note, fw_device.generation always has to be read before fw_device.node_id.
41 * Use SMP memory barriers to ensure this. Otherwise requests will be sent
42 * to an outdated node_id if the generation was updated in the meantime due
45 * Likewise, fw-core will take care to update .node_id before .generation so
46 * that whenever fw_device.generation is current WRT the actual bus generation,
47 * fw_device.node_id is guaranteed to be current too.
49 * The same applies to fw_device.card->node_id vs. fw_device.generation.
51 * fw_device.config_rom and fw_device.config_rom_length may be accessed during
52 * the lifetime of any fw_unit belonging to the fw_device, before device_del()
53 * was called on the last fw_unit. Alternatively, they may be accessed while
54 * holding fw_device_rwsem.
65 struct list_head client_list;
67 size_t config_rom_length;
68 int config_rom_retries;
69 struct delayed_work work;
70 struct fw_attribute_group attribute_group;
73 static inline struct fw_device *fw_device(struct device *dev)
75 return container_of(dev, struct fw_device, device);
78 static inline int fw_device_is_shutdown(struct fw_device *device)
80 return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
83 static inline struct fw_device *fw_device_get(struct fw_device *device)
85 get_device(&device->device);
90 static inline void fw_device_put(struct fw_device *device)
92 put_device(&device->device);
95 struct fw_device *fw_device_get_by_devt(dev_t devt);
96 int fw_device_enable_phys_dma(struct fw_device *device);
98 void fw_device_cdev_update(struct fw_device *device);
99 void fw_device_cdev_remove(struct fw_device *device);
101 extern struct rw_semaphore fw_device_rwsem;
102 extern int fw_cdev_major;
105 * fw_unit.directory must not be accessed after device_del(&fw_unit.device).
108 struct device device;
110 struct fw_attribute_group attribute_group;
113 static inline struct fw_unit *fw_unit(struct device *dev)
115 return container_of(dev, struct fw_unit, device);
118 static inline struct fw_unit *fw_unit_get(struct fw_unit *unit)
120 get_device(&unit->device);
125 static inline void fw_unit_put(struct fw_unit *unit)
127 put_device(&unit->device);
130 #define CSR_OFFSET 0x40
131 #define CSR_LEAF 0x80
132 #define CSR_DIRECTORY 0xc0
134 #define CSR_DESCRIPTOR 0x01
135 #define CSR_VENDOR 0x03
136 #define CSR_HARDWARE_VERSION 0x04
137 #define CSR_NODE_CAPABILITIES 0x0c
138 #define CSR_UNIT 0x11
139 #define CSR_SPECIFIER_ID 0x12
140 #define CSR_VERSION 0x13
141 #define CSR_DEPENDENT_INFO 0x14
142 #define CSR_MODEL 0x17
143 #define CSR_INSTANCE 0x18
144 #define CSR_DIRECTORY_ID 0x20
146 struct fw_csr_iterator {
151 void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 *p);
152 int fw_csr_iterator_next(struct fw_csr_iterator *ci,
153 int *key, int *value);
155 #define FW_MATCH_VENDOR 0x0001
156 #define FW_MATCH_MODEL 0x0002
157 #define FW_MATCH_SPECIFIER_ID 0x0004
158 #define FW_MATCH_VERSION 0x0008
160 struct fw_device_id {
170 struct device_driver driver;
171 /* Called when the parent device sits through a bus reset. */
172 void (*update) (struct fw_unit *unit);
173 const struct fw_device_id *id_table;
176 static inline struct fw_driver *
177 fw_driver(struct device_driver *drv)
179 return container_of(drv, struct fw_driver, driver);
182 extern const struct file_operations fw_device_ops;
184 #endif /* __fw_device_h */