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/*
* novena-eim.h
* ------------
* This module contains the userland magic to set up and use the EIM bus.
*
*
* Author: Pavel Shatov
* Copyright (c) 2014-2015, NORDUnet A/S All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the NORDUnet 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
* HOLDER 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 _NOVENA_EIM_H_
#define _NOVENA_EIM_H_
#include <stdint.h>
#include <sys/types.h> /* Required for off_t, at least on Debian Wheezy. */
#define EIM_BASE_ADDR 0x08000000
/*
* Set up EIM bus.
* Returns 0 on success, -1 on failure.
*/
int eim_setup(void);
/*
* Write a 32-bit word to EIM.
* If EIM is not set up correctly, this will abort with a bus error.
*/
void eim_write_32(off_t, uint32_t *);
/*
* Read a 32-bit word from EIM.
* If EIM is not set up correctly, this will abort with a bus error.
*/
void eim_read_32(off_t, uint32_t *);
#endif /* _NOVENA_EIM_H_ */
/*
* Local variables:
* indent-tabs-mode: nil
* End:
*/
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