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/* gpio_i.h -- Definition of internal types and structures for GPIO code

   Copyright (C) 2001 Erez Volk, erez@mailandnews.comopencores.org

   This file is part of OpenRISC 1000 Architectural Simulator.

   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 __OR1KSIM_PERIPHERAL_GPIO_I_H

#define __OR1KSIM_PERIPHERAL_GPIO_I_H

#include "gpio.h"

#include "config.h"

/*

 * The various VAPI IDs each GPIO device has

 */

enum { GPIO_VAPI_CONFIG = 0, GPIO_VAPI_DATA, GPIO_VAPI_AUX, GPIO_VAPI_CLOCK, GPIO_NUM_VAPI_IDS };

/*

 * Implementatino of GPIO Code Registers and State

 */

struct gpio_device

{

  /* Base address in memory */

  unsigned long baseaddr;

  /* Which IRQ to generate */

  int irq;

  /* Which GPIO is this? */

  unsigned gpio_number;

  /* VAPI IDs */

  unsigned long vapi_ids[GPIO_NUM_VAPI_IDS];

  /* Auxiliary inputs */

  unsigned long auxiliary_inputs;

  /* Visible registers */

  struct

  {

    unsigned long in;

    unsigned long out;

    unsigned long oe;

    unsigned long inte;

    unsigned long ptrig;

    unsigned long aux;

    unsigned long ctrl;

    int external_clock;

  } curr, next;

};

#endif /* __OR1KSIM_PERIPHERAL_GPIO_I_H */