text: /*
   * Copyright (c) 2014 The DragonFly Project.  All rights reserved.
   *
   * This code is derived from software contributed to The DragonFly Project
   * by Matthew Dillon <dillon@backplane.com>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   * 3. Neither the name of The DragonFly Project nor the names of its
   *    contributors may be used to endorse or promote products derived
   *    from this software without specific, prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
   * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #ifndef _BUS_SMBUS_INTELGEN4_IG4_VAR_H_
  #define _BUS_SMBUS_INTELGEN4_IG4_VAR_H_
  
  #include "bus_if.h"
  #include "device_if.h"
  #include "pci_if.h"
  #include "smbus_if.h"
  #include "pcidevs.h"
  
  #define IG4_RBUFSIZE	128
  #define IG4_RBUFMASK	(IG4_RBUFSIZE - 1)
  
  enum ig4_op { IG4_IDLE, IG4_READ, IG4_WRITE };
  
  enum ig4_vers {
  	IG4_HASWELL = 0,
  	IG4_ATOM,	/* Bay Trail, Braswell, Cherryview */
  	IG4_SKYLAKE,	/* Skylake-U/Y and Kaby Lake-U/Y */
  };
  
  struct ig4iic_softc {
  	device_t	dev;
  	device_t	smb;
  	device_t	acpismb;
  	struct resource	*regs_res;
  	int		regs_rid;
  	bus_space_tag_t regs_t;
  	bus_space_handle_t regs_h;
  	struct resource	*intr_res;
  	int		intr_rid;
  	void		*intr_handle;
  	int		intr_type;
  	enum ig4_vers	version;
  	enum ig4_op	op;
  	int		cmd;
  	int		rnext;
  	int		rpos;
  	char		rbuf[IG4_RBUFSIZE];
  	uint32_t	intr_mask;
  	int		error;
  	uint8_t		last_slave;
  	int		pci_attached : 1;
  	int		generic_attached : 1;
  	int		use_10bit : 1;
  	int		slave_valid : 1;
  	int		read_started : 1;
  	int		write_started : 1;
  	struct lwkt_serialize slz;
  };
  
  typedef struct ig4iic_softc ig4iic_softc_t;
  
  /* Attach/Detach called from ig4iic_pci_*() */
  int ig4iic_attach(ig4iic_softc_t *sc);
  int ig4iic_detach(ig4iic_softc_t *sc);
  
  /* SMBus methods */
  extern smbus_callback_t ig4iic_smb_callback;
  extern smbus_quick_t    ig4iic_smb_quick;
  extern smbus_sendb_t    ig4iic_smb_sendb;
  extern smbus_recvb_t    ig4iic_smb_recvb;
  extern smbus_writeb_t   ig4iic_smb_writeb;
  extern smbus_writew_t   ig4iic_smb_writew;
  extern smbus_readb_t    ig4iic_smb_readb;
  extern smbus_readw_t    ig4iic_smb_readw;
  extern smbus_pcall_t    ig4iic_smb_pcall;
  extern smbus_bwrite_t   ig4iic_smb_bwrite;
  extern smbus_bread_t    ig4iic_smb_bread;
  extern smbus_trans_t    ig4iic_smb_trans;
  
  #endif
  