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/*
* This file is part of the coreboot project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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.
*
* Originally imported from linux/include/asm-arm/io.h. This file has changed
* substantially since then.
*/
#ifndef __ARCH_MMIO_H__
#define __ARCH_MMIO_H__
#include <arch/cache.h> /* for dmb() */
#include <endian.h>
#include <stdint.h>
static inline uint8_t read8(const void *addr)
{
dmb();
return *(volatile uint8_t *)__builtin_assume_aligned(addr, sizeof(uint8_t));
}
static inline uint16_t read16(const void *addr)
{
dmb();
return *(volatile uint16_t *)__builtin_assume_aligned(addr, sizeof(uint16_t));
}
static inline uint32_t read32(const void *addr)
{
dmb();
return *(volatile uint32_t *)__builtin_assume_aligned(addr, sizeof(uint32_t));
}
static inline void write8(void *addr, uint8_t val)
{
dmb();
*(volatile uint8_t *)__builtin_assume_aligned(addr, sizeof(uint8_t)) = val;
dmb();
}
static inline void write16(void *addr, uint16_t val)
{
dmb();
*(volatile uint16_t *)__builtin_assume_aligned(addr, sizeof(uint16_t)) = val;
dmb();
}
static inline void write32(void *addr, uint32_t val)
{
dmb();
*(volatile uint32_t *)__builtin_assume_aligned(addr, sizeof(uint32_t)) = val;
dmb();
}
#endif /* __ARCH_MMIO_H__ */
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