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