LXR linux/include/linux/zorro.h

   1/*
   2 *  linux/zorro.h -- Amiga AutoConfig (Zorro) Bus Definitions
   3 *
   4 *  Copyright (C) 1995--2003 Geert Uytterhoeven
   5 *
   6 *  This file is subject to the terms and conditions of the GNU General Public
   7 *  License.  See the file COPYING in the main directory of this archive
   8 *  for more details.
   9 */
  10
  11#ifndef _LINUX_ZORRO_H
  12#define _LINUX_ZORRO_H
  13
  14
  15#include <uapi/linux/zorro.h>
  16
  17#include <linux/device.h>
  18#include <linux/init.h>
  19#include <linux/ioport.h>
  20#include <linux/mod_devicetable.h>
  21
  22#include <asm/zorro.h>
  23
  24
  25    /*
  26     *  Zorro devices
  27     */
  28
  29struct zorro_dev {
  30    struct ExpansionRom rom;
  31    zorro_id id;
  32    struct zorro_driver *driver;        /* which driver has allocated this device */
  33    struct device dev;                  /* Generic device interface */
  34    u16 slotaddr;
  35    u16 slotsize;
  36    char name[64];
  37    struct resource resource;
  38};
  39
  40#define to_zorro_dev(n) container_of(n, struct zorro_dev, dev)
  41
  42
  43    /*
  44     *  Zorro bus
  45     */
  46
  47extern struct bus_type zorro_bus_type;
  48
  49
  50    /*
  51     *  Zorro device drivers
  52     */
  53
  54struct zorro_driver {
  55    struct list_head node;
  56    char *name;
  57    const struct zorro_device_id *id_table;     /* NULL if wants all devices */
  58    int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id);        /* New device inserted */
  59    void (*remove)(struct zorro_dev *z);        /* Device removed (NULL if not a hot-plug capable driver) */
  60    struct device_driver driver;
  61};
  62
  63#define to_zorro_driver(drv)    container_of(drv, struct zorro_driver, driver)
  64
  65
  66#define zorro_for_each_dev(dev) \
  67        for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
  68
  69
  70/* New-style probing */
  71extern int zorro_register_driver(struct zorro_driver *);
  72extern void zorro_unregister_driver(struct zorro_driver *);
  73extern const struct zorro_device_id *zorro_match_device(const struct zorro_device_id *ids, const struct zorro_dev *z);
  74static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z)
  75{
  76    return z->driver;
  77}
  78
  79
  80extern unsigned int zorro_num_autocon;  /* # of autoconfig devices found */
  81extern struct zorro_dev *zorro_autocon;
  82
  83
  84    /*
  85     * Minimal information about a Zorro device, passed from bootinfo
  86     * Only available temporarily, i.e. until initmem has been freed!
  87     */
  88
  89struct zorro_dev_init {
  90        struct ExpansionRom rom;
  91        u16 slotaddr;
  92        u16 slotsize;
  93        u32 boardaddr;
  94        u32 boardsize;
  95};
  96
  97extern struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
  98
  99
 100    /*
 101     *  Zorro Functions
 102     */
 103
 104extern struct zorro_dev *zorro_find_device(zorro_id id,
 105                                           struct zorro_dev *from);
 106
 107#define zorro_resource_start(z) ((z)->resource.start)
 108#define zorro_resource_end(z)   ((z)->resource.end)
 109#define zorro_resource_len(z)   (resource_size(&(z)->resource))
 110#define zorro_resource_flags(z) ((z)->resource.flags)
 111
 112#define zorro_request_device(z, name) \
 113    request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
 114#define zorro_release_device(z) \
 115    release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
 116
 117/* Similar to the helpers above, these manipulate per-zorro_dev
 118 * driver-specific data.  They are really just a wrapper around
 119 * the generic device structure functions of these calls.
 120 */
 121static inline void *zorro_get_drvdata (struct zorro_dev *z)
 122{
 123        return dev_get_drvdata(&z->dev);
 124}
 125
 126static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
 127{
 128        dev_set_drvdata(&z->dev, data);
 129}
 130
 131
 132    /*
 133     *  Bitmask indicating portions of available Zorro II RAM that are unused
 134     *  by the system. Every bit represents a 64K chunk, for a maximum of 8MB
 135     *  (128 chunks, physical 0x00200000-0x009fffff).
 136     *
 137     *  If you want to use (= allocate) portions of this RAM, you should clear
 138     *  the corresponding bits.
 139     */
 140
 141extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
 142
 143#define Z2RAM_START             (0x00200000)
 144#define Z2RAM_END               (0x00a00000)
 145#define Z2RAM_SIZE              (0x00800000)
 146#define Z2RAM_CHUNKSIZE         (0x00010000)
 147#define Z2RAM_CHUNKMASK         (0x0000ffff)
 148#define Z2RAM_CHUNKSHIFT        (16)
 149
 150
 151#endif /* _LINUX_ZORRO_H */
 152