xref: /optee_os/core/include/io.h (revision 685204eb3f2f4162fd7e4ec76e7089cc25de5246)

/*
 * Copyright (c) 2014, Linaro Limited
 * All rights reserved.
 *
 * 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.
 *
 * 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 IO_H
#define IO_H

#include <stdint.h>
#include <types_ext.h>
#include <utee_defines.h>

static inline void write8(uint8_t val, vaddr_t addr)
{
	*(volatile uint8_t *)addr = val;
}

static inline void write16(uint16_t val, vaddr_t addr)
{
	*(volatile uint16_t *)addr = val;
}

static inline void write32(uint32_t val, vaddr_t addr)
{
	*(volatile uint32_t *)addr = val;
}

static inline uint8_t read8(vaddr_t addr)
{
	return *(volatile uint8_t *)addr;
}

static inline uint16_t read16(vaddr_t addr)
{
	return *(volatile uint16_t *)addr;
}

static inline uint32_t read32(vaddr_t addr)
{
	return *(volatile uint32_t *)addr;
}

static inline void io_mask8(vaddr_t addr, uint8_t val, uint8_t mask)
{
	write8((read8(addr) & ~mask) | (val & mask), addr);
}

static inline void io_mask16(vaddr_t addr, uint16_t val, uint16_t mask)
{
	write16((read16(addr) & ~mask) | (val & mask), addr);
}

static inline void io_mask32(vaddr_t addr, uint32_t val, uint32_t mask)
{
	write32((read32(addr) & ~mask) | (val & mask), addr);
}

static inline uint64_t get_be64(const void *p)
{
	return TEE_U64_FROM_BIG_ENDIAN(*(const uint64_t *)p);
}

static inline void put_be64(void *p, uint64_t val)
{
	*(uint64_t *)p = TEE_U64_TO_BIG_ENDIAN(val);
}

static inline uint32_t get_be32(const void *p)
{
	return TEE_U32_FROM_BIG_ENDIAN(*(const uint32_t *)p);
}

static inline void put_be32(void *p, uint32_t val)
{
	*(uint32_t *)p = TEE_U32_TO_BIG_ENDIAN(val);
}

static inline uint16_t get_be16(const void *p)
{
	return TEE_U16_FROM_BIG_ENDIAN(*(const uint16_t *)p);
}

static inline void put_be16(void *p, uint16_t val)
{
	*(uint16_t *)p = TEE_U16_TO_BIG_ENDIAN(val);
}

#endif /*IO_H*/