/*
   *  ISA Plug & Play support
   *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
   *
   *
   *   This program is free software; you can redistribute it and/or modify
   *   it under the terms of the GNU General Public License as published by
   *   the Free Software Foundation; either version 2 of the License, or
   *   (at your option) any later version.
   *
   *   This program is distributed in the hope that it will be useful,
   *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   *   GNU General Public License for more details.
   *
   *   You should have received a copy of the GNU General Public License
   *   along with this program; if not, write to the Free Software
   *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   *
   */
  
  #ifndef LINUX_ISAPNP_H
  #define LINUX_ISAPNP_H

  #include <linux/errno.h>
  #include <linux/pnp.h>
  
  /*

   *
   */
  
  #define ISAPNP_VENDOR(a,b,c)	(((((a)-'A'+1)&0x3f)<<2)|\
  				((((b)-'A'+1)&0x18)>>3)|((((b)-'A'+1)&7)<<13)|\
  				((((c)-'A'+1)&0x1f)<<8))
  #define ISAPNP_DEVICE(x)	((((x)&0xf000)>>8)|\
  				 (((x)&0x0f00)>>8)|\
  				 (((x)&0x00f0)<<8)|\
  				 (((x)&0x000f)<<8))
  #define ISAPNP_FUNCTION(x)	ISAPNP_DEVICE(x)
  
  /*
   *
   */
  
  #ifdef __KERNEL__

  #include <linux/mod_devicetable.h>

  
  #define DEVICE_COUNT_COMPATIBLE 4

  #define ISAPNP_CARD_DEVS	8
  
  #define ISAPNP_CARD_ID(_va, _vb, _vc, _device) \
  		.card_vendor = ISAPNP_VENDOR(_va, _vb, _vc), .card_device = ISAPNP_DEVICE(_device)
  #define ISAPNP_CARD_END \
  		.card_vendor = 0, .card_device = 0
  #define ISAPNP_DEVICE_ID(_va, _vb, _vc, _function) \
  		{ .vendor = ISAPNP_VENDOR(_va, _vb, _vc), .function = ISAPNP_FUNCTION(_function) }
  
  /* export used IDs outside module */
  #define ISAPNP_CARD_TABLE(name) \
  		MODULE_GENERIC_TABLE(isapnp_card, name)
  
  struct isapnp_card_id {
  	unsigned long driver_data;	/* data private to the driver */
  	unsigned short card_vendor, card_device;
  	struct {
  		unsigned short vendor, function;
  	} devs[ISAPNP_CARD_DEVS];	/* logical devices */
  };
  
  #define ISAPNP_DEVICE_SINGLE(_cva, _cvb, _cvc, _cdevice, _dva, _dvb, _dvc, _dfunction) \
  		.card_vendor = ISAPNP_VENDOR(_cva, _cvb, _cvc), .card_device =  ISAPNP_DEVICE(_cdevice), \
  		.vendor = ISAPNP_VENDOR(_dva, _dvb, _dvc), .function = ISAPNP_FUNCTION(_dfunction)
  #define ISAPNP_DEVICE_SINGLE_END \
  		.card_vendor = 0, .card_device = 0

  #if defined(CONFIG_ISAPNP) || (defined(CONFIG_ISAPNP_MODULE) && defined(MODULE))
  
  #define __ISAPNP__
  
  /* lowlevel configuration */
  int isapnp_present(void);
  int isapnp_cfg_begin(int csn, int device);
  int isapnp_cfg_end(void);
  unsigned char isapnp_read_byte(unsigned char idx);
  void isapnp_write_byte(unsigned char idx, unsigned char val);
  
  #ifdef CONFIG_PROC_FS
  int isapnp_proc_init(void);
  int isapnp_proc_done(void);
  #else
  static inline int isapnp_proc_init(void) { return 0; }
  static inline int isapnp_proc_done(void) { return 0; }
  #endif
  
  /* compat */
  struct pnp_card *pnp_find_card(unsigned short vendor,
  			       unsigned short device,
  			       struct pnp_card *from);
  struct pnp_dev *pnp_find_dev(struct pnp_card *card,
  			     unsigned short vendor,
  			     unsigned short function,
  			     struct pnp_dev *from);
  
  #else /* !CONFIG_ISAPNP */
  
  /* lowlevel configuration */
  static inline int isapnp_present(void) { return 0; }
  static inline int isapnp_cfg_begin(int csn, int device) { return -ENODEV; }
  static inline int isapnp_cfg_end(void) { return -ENODEV; }
  static inline unsigned char isapnp_read_byte(unsigned char idx) { return 0xff; }
  static inline void isapnp_write_byte(unsigned char idx, unsigned char val) { ; }
  
  static inline struct pnp_card *pnp_find_card(unsigned short vendor,
  					     unsigned short device,
  					     struct pnp_card *from) { return NULL; }
  static inline struct pnp_dev *pnp_find_dev(struct pnp_card *card,
  					   unsigned short vendor,
  					   unsigned short function,
  					   struct pnp_dev *from) { return NULL; }
  
  #endif /* CONFIG_ISAPNP */
  
  #endif /* __KERNEL__ */
  #endif /* LINUX_ISAPNP_H */