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1694 palkovsky 1 
/*
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 * Copyright (c) 2006 Ondrej Palkovsky
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @file
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 * @ingroup libcia32, libcamd64
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 */
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#ifndef LIBC_ia32_DDI_H_
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#define LIBC_ia32_DDI_H_
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#include <sys/types.h>
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#include <libarch/types.h>
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#define IO_SPACE_BOUNDARY   ((void *) (64 * 1024))
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static inline uint8_t pio_read_8(ioport8_t *port)
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{
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    uint8_t val;
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    asm volatile (
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        "inb %w[port], %b[val]\n"
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        : [val] "=a" (val)
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        : [port] "d" (port)
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    );
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    return val;
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}
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static inline uint16_t pio_read_16(ioport16_t *port)
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{
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    uint16_t val;
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    asm volatile (
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        "inw %w[port], %w[val]\n"
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        : [val] "=a" (val)
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        : [port] "d" (port)
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    );
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    return val;
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}
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static inline uint32_t pio_read_32(ioport32_t *port)
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{
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    uint32_t val;
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    asm volatile (
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        "inl %w[port], %[val]\n"
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        : [val] "=a" (val)
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        : [port] "d" (port)
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    );
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    return val;
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}
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static inline void pio_write_8(ioport8_t *port, uint8_t val)
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{
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    asm volatile (
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        "outb %b[val], %w[port]\n"
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        :: [val] "a" (val), [port] "d" (port)
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    );
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}
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static inline void pio_write_16(ioport16_t *port, uint16_t val)
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{
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    asm volatile (
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        "outw %w[val], %w[port]\n"
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        :: [val] "a" (val), [port] "d" (port)
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    );
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}
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static inline void pio_write_32(ioport32_t *port, uint32_t val)
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{
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    asm volatile (
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        "outl %[val], %w[port]\n"
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        :: [val] "a" (val), [port] "d" (port)
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    );
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}
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#endif