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C/C++ Source or Header  |  2006-08-11  |  2.8 KB  |  108 lines
  1. /*
  2.  * include/linux/superhyway.h
  3.  *
  4.  * SuperHyway Bus definitions
  5.  *
  6.  * Copyright (C) 2004, 2005  Paul Mundt <lethal@linux-sh.org>
  7.  *
  8.  * This file is subject to the terms and conditions of the GNU General Public
  9.  * License.  See the file "COPYING" in the main directory of this archive
  10.  * for more details.
  11.  */
  12. #ifndef __LINUX_SUPERHYWAY_H
  13. #define __LINUX_SUPERHYWAY_H
  14.  
  15. #include <linux/device.h>
  16.  
  17. /*
  18.  * SuperHyway IDs
  19.  */
  20. #define SUPERHYWAY_DEVICE_ID_SH5_DMAC    0x0183
  21.  
  22. struct superhyway_vcr_info {
  23.     u8    perr_flags;    /* P-port Error flags */
  24.     u8    merr_flags;    /* Module Error flags */
  25.     u16    mod_vers;    /* Module Version */
  26.     u16    mod_id;        /* Module ID */
  27.     u8    bot_mb;        /* Bottom Memory block */
  28.     u8    top_mb;        /* Top Memory block */
  29. };
  30.  
  31. struct superhyway_ops {
  32.     int (*read_vcr)(unsigned long base, struct superhyway_vcr_info *vcr);
  33.     int (*write_vcr)(unsigned long base, struct superhyway_vcr_info vcr);
  34. };
  35.  
  36. struct superhyway_bus {
  37.     struct superhyway_ops *ops;
  38. };
  39.  
  40. extern struct superhyway_bus superhyway_channels[];
  41.  
  42. struct superhyway_device_id {
  43.     unsigned int id;
  44.     unsigned long driver_data;
  45. };
  46.  
  47. struct superhyway_device;
  48. extern struct bus_type superhyway_bus_type;
  49.  
  50. struct superhyway_driver {
  51.     char *name;
  52.  
  53.     const struct superhyway_device_id *id_table;
  54.     struct device_driver drv;
  55.  
  56.     int (*probe)(struct superhyway_device *dev, const struct superhyway_device_id *id);
  57.     void (*remove)(struct superhyway_device *dev);
  58. };
  59.  
  60. #define to_superhyway_driver(d)    container_of((d), struct superhyway_driver, drv)
  61.  
  62. struct superhyway_device {
  63.     char name[32];
  64.  
  65.     struct device dev;
  66.  
  67.     struct superhyway_device_id id;
  68.     struct superhyway_driver *drv;
  69.     struct superhyway_bus *bus;
  70.  
  71.     int num_resources;
  72.     struct resource *resource;
  73.     struct superhyway_vcr_info vcr;
  74. };
  75.  
  76. #define to_superhyway_device(d)    container_of((d), struct superhyway_device, dev)
  77.  
  78. #define superhyway_get_drvdata(d)    dev_get_drvdata(&(d)->dev)
  79. #define superhyway_set_drvdata(d,p)    dev_set_drvdata(&(d)->dev, (p))
  80.  
  81. static inline int
  82. superhyway_read_vcr(struct superhyway_device *dev, unsigned long base,
  83.             struct superhyway_vcr_info *vcr)
  84. {
  85.     return dev->bus->ops->read_vcr(base, vcr);
  86. }
  87.  
  88. static inline int
  89. superhyway_write_vcr(struct superhyway_device *dev, unsigned long base,
  90.              struct superhyway_vcr_info vcr)
  91. {
  92.     return dev->bus->ops->write_vcr(base, vcr);
  93. }
  94.  
  95. extern int superhyway_scan_bus(struct superhyway_bus *);
  96.  
  97. /* drivers/sh/superhyway/superhyway.c */
  98. int superhyway_register_driver(struct superhyway_driver *);
  99. void superhyway_unregister_driver(struct superhyway_driver *);
  100. int superhyway_add_device(unsigned long base, struct superhyway_device *, struct superhyway_bus *);
  101. int superhyway_add_devices(struct superhyway_bus *bus, struct superhyway_device **devices, int nr_devices);
  102.  
  103. /* drivers/sh/superhyway/superhyway-sysfs.c */
  104. extern struct device_attribute superhyway_dev_attrs[];
  105.  
  106. #endif /* __LINUX_SUPERHYWAY_H */
  107.  
  108.