/*
   *  linux/zorro.h -- Amiga AutoConfig (Zorro) Bus Definitions
   *
   *  Copyright (C) 1995--2003 Geert Uytterhoeven
   *
   *  This file is subject to the terms and conditions of the GNU General Public
   *  License.  See the file COPYING in the main directory of this archive
   *  for more details.
   */
  
  #ifndef _LINUX_ZORRO_H
  #define _LINUX_ZORRO_H
  
  
  #include <uapi/linux/zorro.h>
  
  #include <linux/device.h>
  #include <linux/init.h>
  #include <linux/ioport.h>
  #include <linux/mod_devicetable.h>
  
  #include <asm/zorro.h>
  
  
      /*
       *  Zorro devices
       */
  
  struct zorro_dev {
      struct ExpansionRom rom;
      zorro_id id;
      struct zorro_driver *driver;	/* which driver has allocated this device */
      struct device dev;			/* Generic device interface */
      u16 slotaddr;
      u16 slotsize;
      char name[64];
      struct resource resource;
  };
  
  #define	to_zorro_dev(n)	container_of(n, struct zorro_dev, dev)
  
  
      /*
       *  Zorro bus
       */
  
  extern struct bus_type zorro_bus_type;
  
  
      /*
       *  Zorro device drivers
       */
  
  struct zorro_driver {
      struct list_head node;
      char *name;
      const struct zorro_device_id *id_table;	/* NULL if wants all devices */
      int (*probe)(struct zorro_dev *z, const struct zorro_device_id *id);	/* New device inserted */
      void (*remove)(struct zorro_dev *z);	/* Device removed (NULL if not a hot-plug capable driver) */
      struct device_driver driver;
  };
  
  #define	to_zorro_driver(drv)	container_of(drv, struct zorro_driver, driver)
  
  
  #define zorro_for_each_dev(dev)	\
  	for (dev = &zorro_autocon[0]; dev < zorro_autocon+zorro_num_autocon; dev++)
  
  
  /* New-style probing */
  extern int zorro_register_driver(struct zorro_driver *);
  extern void zorro_unregister_driver(struct zorro_driver *);
  extern const struct zorro_device_id *zorro_match_device(const struct zorro_device_id *ids, const struct zorro_dev *z);
  static inline struct zorro_driver *zorro_dev_driver(const struct zorro_dev *z)
  {
      return z->driver;
  }
  
  
  extern unsigned int zorro_num_autocon;	/* # of autoconfig devices found */
  extern struct zorro_dev *zorro_autocon;
  
  
      /*
       * Minimal information about a Zorro device, passed from bootinfo
       * Only available temporarily, i.e. until initmem has been freed!
       */
  
  struct zorro_dev_init {
  	struct ExpansionRom rom;
  	u16 slotaddr;
  	u16 slotsize;
  	u32 boardaddr;
  	u32 boardsize;
  };
  
  extern struct zorro_dev_init zorro_autocon_init[ZORRO_NUM_AUTO] __initdata;
  
  
      /*
       *  Zorro Functions
       */
  
  extern struct zorro_dev *zorro_find_device(zorro_id id,
  					   struct zorro_dev *from);
  
  #define zorro_resource_start(z)	((z)->resource.start)
  #define zorro_resource_end(z)	((z)->resource.end)
  #define zorro_resource_len(z)	(resource_size(&(z)->resource))
  #define zorro_resource_flags(z)	((z)->resource.flags)
  
  #define zorro_request_device(z, name) \
      request_mem_region(zorro_resource_start(z), zorro_resource_len(z), name)
  #define zorro_release_device(z) \
      release_mem_region(zorro_resource_start(z), zorro_resource_len(z))
  
  /* Similar to the helpers above, these manipulate per-zorro_dev
   * driver-specific data.  They are really just a wrapper around
   * the generic device structure functions of these calls.
   */
  static inline void *zorro_get_drvdata (struct zorro_dev *z)
  {
  	return dev_get_drvdata(&z->dev);
  }
  
  static inline void zorro_set_drvdata (struct zorro_dev *z, void *data)
  {
  	dev_set_drvdata(&z->dev, data);
  }
  
  
      /*
       *  Bitmask indicating portions of available Zorro II RAM that are unused
       *  by the system. Every bit represents a 64K chunk, for a maximum of 8MB
       *  (128 chunks, physical 0x00200000-0x009fffff).
       *
       *  If you want to use (= allocate) portions of this RAM, you should clear
       *  the corresponding bits.
       */
  
  extern DECLARE_BITMAP(zorro_unused_z2ram, 128);
  
  #define Z2RAM_START		(0x00200000)
  #define Z2RAM_END		(0x00a00000)
  #define Z2RAM_SIZE		(0x00800000)
  #define Z2RAM_CHUNKSIZE		(0x00010000)
  #define Z2RAM_CHUNKMASK		(0x0000ffff)
  #define Z2RAM_CHUNKSHIFT	(16)
  
  
  #endif /* _LINUX_ZORRO_H */