include/linux/superhyway.h

   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