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  1. /*
  2.  * Copyright (c) 2006 Ondrej Palkovsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @file
  30.  * @ingroup libcia32, libcamd64
  31.  */
  32.  
  33. #ifndef LIBC_ia32_DDI_H_
  34. #define LIBC_ia32_DDI_H_
  35.  
  36. #define IO_SPACE_BOUNDARY   ((void *) (64 * 1024))
  37.  
  38. static inline void outb(int16_t port, uint8_t b)
  39. {
  40.     asm volatile ("outb %0, %1\n" :: "a" (b), "d" (port));
  41. }
  42.  
  43. static inline void outw(int16_t port, int16_t w)
  44. {
  45.     asm volatile ("outw %0, %1\n" :: "a" (w), "d" (port));
  46. }
  47.  
  48. static inline void outl(int16_t port, uint32_t l)
  49. {
  50.     asm volatile ("outl %0, %1\n" :: "a" (l), "d" (port));
  51. }
  52.  
  53. static inline uint8_t inb(int16_t port)
  54. {
  55.     uint8_t val;
  56.  
  57.     asm volatile ("inb %1, %0 \n" : "=a" (val) : "d"(port));
  58.     return val;
  59. }
  60.  
  61. static inline int16_t inw(int16_t port)
  62. {
  63.     int16_t val;
  64.  
  65.     asm volatile ("inw %1, %0 \n" : "=a" (val) : "d"(port));
  66.     return val;
  67. }
  68.  
  69. static inline uint32_t inl(int16_t port)
  70. {
  71.     uint32_t val;
  72.  
  73.     asm volatile ("inl %1, %0 \n" : "=a" (val) : "d"(port));
  74.     return val;
  75. }
  76.  
  77. #endif
  78.