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 device dev;                  /* Generic device interface */
  33    u16 slotaddr;
  34    u16 slotsize;
  35    char name[64];
  36    struct resource resource;
  37};
  38
  39#define to_zorro_dev(n) container_of(n, struct zorro_dev, dev)
  40
  41
  42    /*
  43     *  Zorro device drivers
  44     */
  45
  46struct zorro_driver {
  47    struct list_head node;
  48    char *name;
  49    const struct zorro_device_id *id_table;     /* NULL if wants all devices */
  50    int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id);        /* New device inserted */
  51    void (*remove)(struct zorro_dev *z);        /* Device removed (NULL if not a hot-plug capable driver) */
  52    struct device_driver driver;
  53};
  54
  55#define to_zorro_driver(drv)    container_of(drv, struct zorro_driver, driver)
  56
  57
  58#define zorro_for_each_dev(dev) \
  59        for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
  60
  61
  62/* New-style probing */
  63extern int zorro_register_driver(struct zorro_driver *);
  64extern void zorro_unregister_driver(struct zorro_driver *);
  65
  66
  67extern unsigned int zorro_num_autocon;  /* # of autoconfig devices found */
  68extern struct zorro_dev *zorro_autocon;
  69
  70
  71    /*
  72     * Minimal information about a Zorro device, passed from bootinfo
  73     * Only available temporarily, i.e. until initmem has been freed!
  74     */
  75
  76struct zorro_dev_init {
  77        struct ExpansionRom rom;
  78        u16 slotaddr;
  79        u16 slotsize;
  80        u32 boardaddr;
  81        u32 boardsize;
  82};
  83
  84extern struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
  85
  86
  87    /*
  88     *  Zorro Functions
  89     */
  90
  91extern struct zorro_dev *zorro_find_device(zorro_id id,
  92                                           struct zorro_dev *from);
  93
  94#define zorro_resource_start(z) ((z)->resource.start)
  95#define zorro_resource_end(z)   ((z)->resource.end)
  96#define zorro_resource_len(z)   (resource_size(&(z)->resource))
  97#define zorro_resource_flags(z) ((z)->resource.flags)
  98
  99#define zorro_request_device(z, name) \
 100    request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
 101#define zorro_release_device(z) \
 102    release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
 103
 104/* Similar to the helpers above, these manipulate per-zorro_dev
 105 * driver-specific data.  They are really just a wrapper around
 106 * the generic device structure functions of these calls.
 107 */
 108static inline void *zorro_get_drvdata (struct zorro_dev *z)
 109{
 110        return dev_get_drvdata(&z->dev);
 111}
 112
 113static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
 114{
 115        dev_set_drvdata(&z->dev, data);
 116}
 117
 118
 119    /*
 120     *  Bitmask indicating portions of available Zorro II RAM that are unused
 121     *  by the system. Every bit represents a 64K chunk, for a maximum of 8MB
 122     *  (128 chunks, physical 0x00200000-0x009fffff).
 123     *
 124     *  If you want to use (= allocate) portions of this RAM, you should clear
 125     *  the corresponding bits.
 126     */
 127
 128extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
 129
 130#define Z2RAM_START             (0x00200000)
 131#define Z2RAM_END               (0x00a00000)
 132#define Z2RAM_SIZE              (0x00800000)
 133#define Z2RAM_CHUNKSIZE         (0x00010000)
 134#define Z2RAM_CHUNKMASK         (0x0000ffff)
 135#define Z2RAM_CHUNKSHIFT        (16)
 136
 137
 138#endif /* _LINUX_ZORRO_H */
 139