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/*
* Copyright (c) 2008-2012, Freescale Semiconductor, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice, this list
* of conditions and the following disclaimer.
*
* o 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.
*
* o Neither the name of Freescale Semiconductor, Inc. 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.
*/
/*!
* @file io.h
* @brief Register access macros.
*
* @ingroup diag_init
*/
#ifndef __IO_H__
#define __IO_H__
#include "sdk_types.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sdk.h"
////////////////////////////////////////////////////////////////////////////////
// Definitions
////////////////////////////////////////////////////////////////////////////////
//! @name Register read functions
//@{
#define reg8_read(addr) *((volatile uint8_t *)(addr))
#define reg16_read(addr) *((volatile uint16_t *)(addr))
#define reg32_read(addr) *((volatile uint32_t *)(addr))
//@}
//! @name Register write functions
//@{
#define reg8_write(addr,val) *((volatile uint8_t *)(addr)) = (val)
#define reg16_write(addr,val) *((volatile uint16_t *)(addr)) = (val)
#define reg32_write(addr,val) *((volatile uint32_t *)(addr)) = (val)
//@}
//! @name Memory read functions
//@{
#define mem8_read(addr) *((volatile uint8_t *)(addr))
#define mem16_read(addr) *((volatile uint16_t *)(addr))
#define mem32_read(addr) *((volatile uint32_t *)(addr))
//@}
//! @name Memory write functions
//@{
#define mem8_write(addr,val) *((volatile uint8_t *)(addr)) = (val)
#define mem16_write(addr,val) *((volatile uint16_t *)(addr)) = (val)
#define mem32_write(addr,val) *((volatile uint32_t *)(addr)) = (val)
//@}
//! @name Read functions
//@{
#define readb(a) reg8_read(a)
#define readw(a) reg16_read(a)
#define readl(a) reg32_read(a)
//@}
//! @name Write functrions
//!
//! The prefered method to access registers.
//@{
#define writeb(v, a) reg8_write(a, v)
#define writew(v, a) reg16_write(a, v)
#define writel(v, a) reg32_write(a, v)
//@}
//! @name Bit set/clear functions
//@{
#define reg8setbit(addr,bitpos) \
reg8_write((addr),(reg8_read((addr)) | (1<<(bitpos))))
#define reg16setbit(addr,bitpos) \
reg16_write((addr),(reg16_read((addr)) | (1<<(bitpos))))
#define reg32setbit(addr,bitpos) \
reg32_write((addr),(reg32_read((addr)) | (1<<(bitpos))))
#define reg8clrbit(addr,bitpos) \
reg8_write((addr),(reg8_read((addr)) & (0xFF ^ (1<<(bitpos)))))
#define reg16clrbit(addr,bitpos) \
reg16_write((addr),(reg16_read((addr)) & (0xFFFF ^ (1<<(bitpos)))))
#define reg32clrbit(addr,bitpos) \
reg32_write((addr),(reg32_read((addr)) & (0xFFFFFFFF ^ (1<<(bitpos)))))
//@}
//! @name Masked write functions
//@{
#define reg8_write_mask(addr, data, mask) \
reg8_write((addr),((reg8_read(addr) & (~mask)) | (mask & data)))
#define reg16_write_mask(addr, data, mask) \
reg16_write((addr),((reg16_read(addr) & (~mask)) | (mask & data)))
#define reg32_write_mask(addr, data, mask) \
reg32_write((addr),((reg32_read(addr) & (~mask)) | (mask & data)))
#define gen_msk32(start, end) ((0xFFFFFFFF << (start)) ^ (0xFFFFFFFF << ((end + 1))))
#define reg32_set_field(addr, start, end, val) \
reg32_write_mask(addr, (val) << (start), gen_msk32((start, end)))
//@}
/*!
* This macro is used to get certain bit field from a number
*/
#define GET_FIELD(val, len, sh) ((val >> sh) & ((1 << len) - 1))
/*!
* This macro is used to set certain bit field inside a number
*/
#define SET_FIELD(val, len, sh, nval) ((val & ~(((1 << len) - 1) << sh)) | (nval << sh))
#endif // __IO_H__
////////////////////////////////////////////////////////////////////////////////
// EOF
////////////////////////////////////////////////////////////////////////////////
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