include/asm-i386/acpi.h

   1 /*
   2  *  asm-i386/acpi.h
   3  *
   4  *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
   5  *  Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
   6   *
   7  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  *
  23  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  24  */
  25
  26 #ifndef _ASM_ACPI_H
  27 #define _ASM_ACPI_H
  28
  29 #ifdef __KERNEL__
  30
  31 #include <acpi/pdc_intel.h>
  32
  33 #include <asm/system.h>         /* defines cmpxchg */
  34
  35 #define COMPILER_DEPENDENT_INT64   long long
  36 #define COMPILER_DEPENDENT_UINT64  unsigned long long
  37
  38 /*
  39  * Calling conventions:
  40  *
  41  * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  42  * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
  43  * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  44  * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  45  */
  46 #define ACPI_SYSTEM_XFACE
  47 #define ACPI_EXTERNAL_XFACE
  48 #define ACPI_INTERNAL_XFACE
  49 #define ACPI_INTERNAL_VAR_XFACE
  50
  51 /* Asm macros */
  52
  53 #define ACPI_ASM_MACROS
  54 #define BREAKPOINT3
  55 #define ACPI_DISABLE_IRQS() local_irq_disable()
  56 #define ACPI_ENABLE_IRQS()  local_irq_enable()
  57 #define ACPI_FLUSH_CPU_CACHE()  wbinvd()
  58
  59 int __acpi_acquire_global_lock(unsigned int *lock);
  60 int __acpi_release_global_lock(unsigned int *lock);
  61
  62 #define ACPI_ACQUIRE_GLOBAL_LOCK(facs, Acq) \
  63         ((Acq) = __acpi_acquire_global_lock(&facs->global_lock))
  64
  65 #define ACPI_RELEASE_GLOBAL_LOCK(facs, Acq) \
  66         ((Acq) = __acpi_release_global_lock(&facs->global_lock))
  67
  68 /*
  69  * Math helper asm macros
  70  */
  71 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
  72         asm("divl %2;"        \
  73         :"=a"(q32), "=d"(r32) \
  74         :"r"(d32),            \
  75         "0"(n_lo), "1"(n_hi))
  76
  77
  78 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
  79     asm("shrl   $1,%2;"             \
  80         "rcrl   $1,%3;"             \
  81         :"=r"(n_hi), "=r"(n_lo)     \
  82         :"0"(n_hi), "1"(n_lo))
  83
  84 #ifdef CONFIG_X86_IO_APIC
  85 extern void check_acpi_pci(void);
  86 #else
  87 static inline void check_acpi_pci(void) { }
  88 #endif
  89
  90 #ifdef CONFIG_ACPI
  91 extern int acpi_lapic;
  92 extern int acpi_ioapic;
  93 extern int acpi_noirq;
  94 extern int acpi_strict;
  95 extern int acpi_disabled;
  96 extern int acpi_ht;
  97 extern int acpi_pci_disabled;
  98 static inline void disable_acpi(void)
  99 {
 100         acpi_disabled = 1;
 101         acpi_ht = 0;
 102         acpi_pci_disabled = 1;
 103         acpi_noirq = 1;
 104 }
 105
 106 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
 107 #define FIX_ACPI_PAGES 4
 108
 109 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
 110
 111 #ifdef CONFIG_X86_IO_APIC
 112 extern int acpi_skip_timer_override;
 113 extern int acpi_use_timer_override;
 114 #endif
 115
 116 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
 117 static inline void acpi_disable_pci(void)
 118 {
 119         acpi_pci_disabled = 1;
 120         acpi_noirq_set();
 121 }
 122 extern int acpi_irq_balance_set(char *str);
 123
 124 #else   /* !CONFIG_ACPI */
 125
 126 #define acpi_lapic 0
 127 #define acpi_ioapic 0
 128 static inline void acpi_noirq_set(void) { }
 129 static inline void acpi_disable_pci(void) { }
 130
 131 #endif  /* !CONFIG_ACPI */
 132
 133
 134 #ifdef CONFIG_ACPI_SLEEP
 135
 136 /* routines for saving/restoring kernel state */
 137 extern int acpi_save_state_mem(void);
 138 extern void acpi_restore_state_mem(void);
 139
 140 extern unsigned long acpi_wakeup_address;
 141
 142 /* early initialization routine */
 143 extern void acpi_reserve_bootmem(void);
 144
 145 #endif /*CONFIG_ACPI_SLEEP*/
 146
 147 #define ARCH_HAS_POWER_INIT     1
 148
 149 #endif /*__KERNEL__*/
 150
 151 #endif /*_ASM_ACPI_H*/