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/*
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
* Copyright (C) 2008 coresystems GmbH
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 _ARCH_IO_H
#define _ARCH_IO_H
#include <stdint.h>
#include <arch/cache.h>
#include <arch/lib_helpers.h>
/*
* readb/w/l writeb/w/l are deprecated. use read8/16/32 and write8/16/32
* instead for future development.
*
* TODO: make the existing code use read8/16/32 and write8/16/32 then remove
* readb/w/l and writeb/w/l.
*/
static inline uint8_t readb(volatile const void *_a)
{
dmb();
return *(volatile const uint8_t *)_a;
}
static inline uint16_t readw(volatile const void *_a)
{
dmb();
return *(volatile const uint16_t *)_a;
}
static inline uint32_t readl(volatile const void *_a)
{
dmb();
return *(volatile const uint32_t *)_a;
}
static inline void writeb(uint8_t _v, volatile void *_a)
{
dmb();
*(volatile uint8_t *)_a = _v;
dmb();
}
static inline void writew(uint16_t _v, volatile void *_a)
{
dmb();
*(volatile uint16_t *)_a = _v;
dmb();
}
static inline void writel(uint32_t _v, volatile void *_a)
{
dmb();
*(volatile uint32_t *)_a = _v;
dmb();
}
static inline uint8_t read8(const void *addr)
{
dmb();
return *(volatile uint8_t *)addr;
}
static inline uint16_t read16(const void *addr)
{
dmb();
return *(volatile uint16_t *)addr;
}
static inline uint32_t read32(const void *addr)
{
dmb();
return *(volatile uint32_t *)addr;
}
static inline void write8(void *addr, uint8_t val)
{
dmb();
*(volatile uint8_t *)addr = val;
dmb();
}
static inline void write16(void *addr, uint16_t val)
{
dmb();
*(volatile uint16_t *)addr = val;
dmb();
}
static inline void write32(void *addr, uint32_t val)
{
dmb();
*(volatile uint32_t *)addr = val;
dmb();
}
#endif
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