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
  29 struct 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
  46 struct 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 */
  63 extern int zorro_register_driver(struct zorro_driver *);
  64 extern void zorro_unregister_driver(struct zorro_driver *);
  65
  66
  67 extern unsigned int zorro_num_autocon;  /* # of autoconfig devices found */
  68 extern 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
  76 struct zorro_dev_init {
  77         struct ExpansionRom rom;
  78         u16 slotaddr;
  79         u16 slotsize;
  80         u32 boardaddr;
  81         u32 boardsize;
  82 };
  83
  84 extern struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
  85
  86
  87     /*
  88      *  Zorro Functions
  89      */
  90
  91 extern 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  */
 108 static inline void *zorro_get_drvdata (struct zorro_dev *z)
 109 {
 110         return dev_get_drvdata(&z->dev);
 111 }
 112
 113 static 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
 128 extern 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 */