linux/include/linux/superhyway.h
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   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
  22struct 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
  31struct 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
  36struct superhyway_bus {
  37        struct superhyway_ops *ops;
  38};
  39
  40extern struct superhyway_bus superhyway_channels[];
  41
  42struct superhyway_device_id {
  43        unsigned int id;
  44        unsigned long driver_data;
  45};
  46
  47struct superhyway_device;
  48extern struct bus_type superhyway_bus_type;
  49
  50struct 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
  62struct 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
  81static inline int
  82superhyway_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
  88static inline int
  89superhyway_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
  95extern int superhyway_scan_bus(struct superhyway_bus *);
  96
  97/* drivers/sh/superhyway/superhyway.c */
  98int superhyway_register_driver(struct superhyway_driver *);
  99void superhyway_unregister_driver(struct superhyway_driver *);
 100int superhyway_add_device(unsigned long base, struct superhyway_device *, struct superhyway_bus *);
 101int superhyway_add_devices(struct superhyway_bus *bus, struct superhyway_device **devices, int nr_devices);
 102
 103/* drivers/sh/superhyway/superhyway-sysfs.c */
 104extern struct device_attribute superhyway_dev_attrs[];
 105
 106#endif /* __LINUX_SUPERHYWAY_H */
 107
 108
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