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/* gpio.h -- Definition of types and structures for the GPIO code
 
   Copyright (C) 2001 Erez Volk, erez@mailandnews.comopencores.org
   Copyright (C) 2008 Embecosm Limited
 
   Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
 
   This file is part of Or1ksim, the 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 3 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, see <http://www.gnu.org/licenses/>.  */
 
/* This program is commented throughout in a fashion suitable for processing
   with Doxygen. */
 
 
#ifndef GPIO__H
#define GPIO__H
 
 
/* Constants also used by testbench */
 
/* Address space required by one GPIO */
#define GPIO_ADDR_SPACE      0x20
 
/* Relative Register Addresses */
#define RGPIO_IN             0x00
#define RGPIO_OUT            0x04
#define RGPIO_OE             0x08
#define RGPIO_INTE           0x0C
#define RGPIO_PTRIG          0x10
#define RGPIO_AUX            0x14
#define RGPIO_CTRL           0x18
#define RGPIO_INTS           0x1C
 
/* Fields inside RGPIO_CTRL */
#define RGPIO_CTRL_ECLK      0x00000001
#define RGPIO_CTRL_NEC       0x00000002
#define RGPIO_CTRL_INTE      0x00000004
#define RGPIO_CTRL_INTS      0x00000008
 
 
/* Function prototypes for external use */
extern void  reg_gpio_sec ();
 
#endif  /* GPIO__H */