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/*
* Copyright (c) 2023 Ian Marco Moffett and the Osmora Team.
* 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.
* 3. Neither the name of Hyra 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 OWNER 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 _AMD64_IO_H_
#define _AMD64_IO_H_
#include <sys/types.h>
#include <sys/cdefs.h>
static inline uint8_t
inb(uint16_t port)
{
uint8_t result;
__asm__("in %%dx, %%al" : "=a" (result) : "d" (port));
return result;
}
static inline void
outb(uint16_t port, uint8_t data)
{
__asm__("out %%al, %%dx" : :"a" (data), "d" (port));
}
static inline void
outw(uint16_t port, uint16_t data)
{
__ASMV("outw %w0, %w1" : : "a" (data), "Nd" (port));
}
static inline uint16_t
inw(uint16_t port)
{
uint16_t data;
__ASMV("inw %w1, %w0" : "=a" (data) : "Nd" (port));
return data;
}
static inline void
outl(uint16_t port, uint32_t data)
{
__ASMV("outl %0, %w1" : : "a" (data), "Nd" (port));
}
static inline uint32_t
inl(uint16_t port)
{
uint32_t data;
__ASMV("inl %w1, %0" : "=a" (data) : "Nd" (port));
return data;
}
#endif /* !_AMD64_IO_H_ */
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