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  1. /*
  2.  * Copyright (C) 2005 Jakub Jermar
  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. #ifndef __ACPI_H__
  30. #define __ACPI_H__
  31.  
  32. #include <arch/types.h>
  33.  
  34. /* Root System Description Pointer */
  35. struct acpi_rsdp {
  36.     __u8 signature[8];
  37.     __u8 checksum;
  38.     __u8 oemid[6];
  39.     __u8 revision;
  40.     __u32 rsdt_address;
  41.     __u32 length;
  42.     __u64 xsdt_address;
  43.     __u32 ext_checksum;
  44.     __u8 reserved[3];
  45. } __attribute__ ((packed));
  46.  
  47. /* System Description Table Header */
  48. struct acpi_sdt_header {
  49.     __u8 signature[4];
  50.     __u32 length;
  51.     __u8 revision;
  52.     __u8 checksum;
  53.     __u8 oemid[6];
  54.     __u8 oem_table_id[8];
  55.     __u32 oem_revision;
  56.     __u32 creator_id;
  57.     __u32 creator_revision;
  58. } __attribute__ ((packed));;
  59.  
  60. /* Root System Description Table */
  61. struct acpi_rsdt {
  62.     struct acpi_sdt_header header;
  63.     __u32 entry[];
  64. } __attribute__ ((packed));;
  65.  
  66. /* Extended System Description Table */
  67. struct acpi_xsdt {
  68.     struct acpi_sdt_header header;
  69.     __u64 entry[];
  70. } __attribute__ ((packed));;
  71.  
  72. extern struct acpi_rsdp *acpi_rsdp;
  73.  
  74. extern void acpi_init(void);
  75.  
  76. static int rsdp_check(__u8 *rsdp);
  77.  
  78. #endif /* __ACPI_H__ */
  79.