drivers/firewire/fw-device.h

   1 /*
   2  * Copyright (C) 2005-2006  Kristian Hoegsberg <krh@bitplanet.net>
   3  *
   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.
   8  *
   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.
  13  *
  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.
  17  */
  18
  19 #ifndef __fw_device_h
  20 #define __fw_device_h
  21
  22 #include <linux/fs.h>
  23 #include <linux/cdev.h>
  24 #include <asm/atomic.h>
  25
  26 enum fw_device_state {
  27         FW_DEVICE_INITIALIZING,
  28         FW_DEVICE_RUNNING,
  29         FW_DEVICE_SHUTDOWN,
  30 };
  31
  32 struct fw_attribute_group {
  33         struct attribute_group *groups[2];
  34         struct attribute_group group;
  35         struct attribute *attrs[11];
  36 };
  37
  38 struct fw_device {
  39         atomic_t state;
  40         struct fw_node *node;
  41         int node_id;
  42         int generation;
  43         unsigned max_speed;
  44         struct fw_card *card;
  45         struct device device;
  46         struct list_head link;
  47         struct list_head client_list;
  48         u32 *config_rom;
  49         size_t config_rom_length;
  50         int config_rom_retries;
  51         struct delayed_work work;
  52         struct fw_attribute_group attribute_group;
  53 };
  54
  55 static inline struct fw_device *
  56 fw_device(struct device *dev)
  57 {
  58         return container_of(dev, struct fw_device, device);
  59 }
  60
  61 static inline int
  62 fw_device_is_shutdown(struct fw_device *device)
  63 {
  64         return atomic_read(&device->state) == FW_DEVICE_SHUTDOWN;
  65 }
  66
  67 struct fw_device *fw_device_get(struct fw_device *device);
  68 void fw_device_put(struct fw_device *device);
  69 int fw_device_enable_phys_dma(struct fw_device *device);
  70
  71 void fw_device_cdev_update(struct fw_device *device);
  72 void fw_device_cdev_remove(struct fw_device *device);
  73
  74 struct fw_device *fw_device_from_devt(dev_t devt);
  75 extern int fw_cdev_major;
  76
  77 struct fw_unit {
  78         struct device device;
  79         u32 *directory;
  80         struct fw_attribute_group attribute_group;
  81 };
  82
  83 static inline struct fw_unit *
  84 fw_unit(struct device *dev)
  85 {
  86         return container_of(dev, struct fw_unit, device);
  87 }
  88
  89 #define CSR_OFFSET      0x40
  90 #define CSR_LEAF        0x80
  91 #define CSR_DIRECTORY   0xc0
  92
  93 #define CSR_DESCRIPTOR          0x01
  94 #define CSR_VENDOR              0x03
  95 #define CSR_HARDWARE_VERSION    0x04
  96 #define CSR_NODE_CAPABILITIES   0x0c
  97 #define CSR_UNIT                0x11
  98 #define CSR_SPECIFIER_ID        0x12
  99 #define CSR_VERSION             0x13
 100 #define CSR_DEPENDENT_INFO      0x14
 101 #define CSR_MODEL               0x17
 102 #define CSR_INSTANCE            0x18
 103 #define CSR_DIRECTORY_ID        0x20
 104
 105 struct fw_csr_iterator {
 106         u32 *p;
 107         u32 *end;
 108 };
 109
 110 void fw_csr_iterator_init(struct fw_csr_iterator *ci, u32 *p);
 111 int fw_csr_iterator_next(struct fw_csr_iterator *ci,
 112                          int *key, int *value);
 113
 114 #define FW_MATCH_VENDOR         0x0001
 115 #define FW_MATCH_MODEL          0x0002
 116 #define FW_MATCH_SPECIFIER_ID   0x0004
 117 #define FW_MATCH_VERSION        0x0008
 118
 119 struct fw_device_id {
 120         u32 match_flags;
 121         u32 vendor;
 122         u32 model;
 123         u32 specifier_id;
 124         u32 version;
 125         void *driver_data;
 126 };
 127
 128 struct fw_driver {
 129         struct device_driver driver;
 130         /* Called when the parent device sits through a bus reset. */
 131         void (*update) (struct fw_unit *unit);
 132         const struct fw_device_id *id_table;
 133 };
 134
 135 static inline struct fw_driver *
 136 fw_driver(struct device_driver *drv)
 137 {
 138         return container_of(drv, struct fw_driver, driver);
 139 }
 140
 141 extern const struct file_operations fw_device_ops;
 142
 143 #endif /* __fw_device_h */