#ifndef _LINUX_EISA_H
  #define _LINUX_EISA_H
  
  #include <linux/ioport.h>
  #include <linux/device.h>

  #include <linux/mod_devicetable.h>

  #define EISA_MAX_SLOTS 8
  
  #define EISA_MAX_RESOURCES 4
  
  /* A few EISA constants/offsets... */
  
  #define EISA_DMA1_STATUS            8
  #define EISA_INT1_CTRL           0x20
  #define EISA_INT1_MASK           0x21
  #define EISA_INT2_CTRL           0xA0
  #define EISA_INT2_MASK           0xA1
  #define EISA_DMA2_STATUS         0xD0
  #define EISA_DMA2_WRITE_SINGLE   0xD4
  #define EISA_EXT_NMI_RESET_CTRL 0x461
  #define EISA_INT1_EDGE_LEVEL    0x4D0
  #define EISA_INT2_EDGE_LEVEL    0x4D1
  #define EISA_VENDOR_ID_OFFSET   0xC80
  #define EISA_CONFIG_OFFSET      0xC84
  
  #define EISA_CONFIG_ENABLED         1
  #define EISA_CONFIG_FORCED          2

  /* There is not much we can say about an EISA device, apart from
   * signature, slot number, and base address. dma_mask is set by
   * default to parent device mask..*/
  
  struct eisa_device {
  	struct eisa_device_id id;
  	int                   slot;
  	int                   state;
  	unsigned long         base_addr;
  	struct resource       res[EISA_MAX_RESOURCES];
  	u64                   dma_mask;
  	struct device         dev; /* generic device */
  #ifdef CONFIG_EISA_NAMES
  	char		      pretty_name[DEVICE_NAME_SIZE];
  #endif
  };
  
  #define to_eisa_device(n) container_of(n, struct eisa_device, dev)
  
  static inline int eisa_get_region_index (void *addr)
  {
  	unsigned long x = (unsigned long) addr;
  
  	x &= 0xc00;
  	return (x >> 12);
  }
  
  struct eisa_driver {
  	const struct eisa_device_id *id_table;
  	struct device_driver         driver;
  };
  
  #define to_eisa_driver(drv) container_of(drv,struct eisa_driver, driver)

  /* These external functions are only available when EISA support is enabled. */
  #ifdef CONFIG_EISA

  extern struct bus_type eisa_bus_type;
  int eisa_driver_register (struct eisa_driver *edrv);
  void eisa_driver_unregister (struct eisa_driver *edrv);

  #else /* !CONFIG_EISA */
  
  static inline int eisa_driver_register (struct eisa_driver *edrv) { return 0; }
  static inline void eisa_driver_unregister (struct eisa_driver *edrv) { }
  
  #endif /* !CONFIG_EISA */

  /* Mimics pci.h... */
  static inline void *eisa_get_drvdata (struct eisa_device *edev)
  {
          return edev->dev.driver_data;
  }
  
  static inline void eisa_set_drvdata (struct eisa_device *edev, void *data)
  {
          edev->dev.driver_data = data;
  }
  
  /* The EISA root device. There's rumours about machines with multiple
   * busses (PA-RISC ?), so we try to handle that. */
  
  struct eisa_root_device {
  	struct device   *dev;	 /* Pointer to bridge device */
  	struct resource *res;
  	unsigned long    bus_base_addr;
  	int		 slots;  /* Max slot number */
  	int		 force_probe; /* Probe even when no slot 0 */
  	u64		 dma_mask; /* from bridge device */
  	int              bus_nr; /* Set by eisa_root_register */
  	struct resource  eisa_root_res;	/* ditto */
  };
  
  int eisa_root_register (struct eisa_root_device *root);
  
  #ifdef CONFIG_EISA
  extern int EISA_bus;
  #else
  # define EISA_bus 0
  #endif
  
  #endif