include/asm-x86_64/acpi.h

   1 /*
   2  *  asm-x86_64/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 #define COMPILER_DEPENDENT_INT64   long long
  32 #define COMPILER_DEPENDENT_UINT64  unsigned long long
  33
  34 /*
  35  * Calling conventions:
  36  *
  37  * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  38  * ACPI_EXTERNAL_XFACE      - External ACPI interfaces
  39  * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  40  * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  41  */
  42 #define ACPI_SYSTEM_XFACE
  43 #define ACPI_EXTERNAL_XFACE
  44 #define ACPI_INTERNAL_XFACE
  45 #define ACPI_INTERNAL_VAR_XFACE
  46
  47 /* Asm macros */
  48
  49 #define ACPI_ASM_MACROS
  50 #define BREAKPOINT3
  51 #define ACPI_DISABLE_IRQS() local_irq_disable()
  52 #define ACPI_ENABLE_IRQS()  local_irq_enable()
  53 #define ACPI_FLUSH_CPU_CACHE()  wbinvd()
  54
  55
  56 static inline int
  57 __acpi_acquire_global_lock (unsigned int *lock)
  58 {
  59         unsigned int old, new, val;
  60         do {
  61                 old = *lock;
  62                 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
  63                 val = cmpxchg(lock, old, new);
  64         } while (unlikely (val != old));
  65         return (new < 3) ? -1 : 0;
  66 }
  67
  68 static inline int
  69 __acpi_release_global_lock (unsigned int *lock)
  70 {
  71         unsigned int old, new, val;
  72         do {
  73                 old = *lock;
  74                 new = old & ~0x3;
  75                 val = cmpxchg(lock, old, new);
  76         } while (unlikely (val != old));
  77         return old & 0x1;
  78 }
  79
  80 #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
  81         ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
  82
  83 #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
  84         ((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
  85
  86 /*
  87  * Math helper asm macros
  88  */
  89 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
  90         asm("divl %2;"        \
  91         :"=a"(q32), "=d"(r32) \
  92         :"r"(d32),            \
  93         "0"(n_lo), "1"(n_hi))
  94
  95
  96 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
  97     asm("shrl   $1,%2;"             \
  98         "rcrl   $1,%3;"             \
  99         :"=r"(n_hi), "=r"(n_lo)     \
 100         :"0"(n_hi), "1"(n_lo))
 101
 102 /*
 103  * Refer Intel ACPI _PDC support document for bit definitions
 104  */
 105 #define ACPI_PDC_EST_CAPABILITY_SMP     0xa
 106 #define ACPI_PDC_EST_CAPABILITY_MSR     0x1
 107
 108 #ifdef CONFIG_ACPI_BOOT
 109 extern int acpi_lapic;
 110 extern int acpi_ioapic;
 111 extern int acpi_noirq;
 112 extern int acpi_strict;
 113 extern int acpi_disabled;
 114 extern int acpi_pci_disabled;
 115 extern int acpi_ht;
 116 static inline void disable_acpi(void)
 117 {
 118         acpi_disabled = 1;
 119         acpi_ht = 0;
 120         acpi_pci_disabled = 1;
 121         acpi_noirq = 1;
 122 }
 123
 124 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
 125 #define FIX_ACPI_PAGES 4
 126
 127 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
 128
 129 #else   /* !CONFIG_ACPI_BOOT */
 130 #define acpi_lapic 0
 131 #define acpi_ioapic 0
 132 #endif /* !CONFIG_ACPI_BOOT */
 133
 134 extern int acpi_numa;
 135 extern int acpi_scan_nodes(unsigned long start, unsigned long end);
 136 #define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
 137
 138 #ifdef CONFIG_ACPI_PCI
 139 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
 140 static inline void acpi_disable_pci(void)
 141 {
 142         acpi_pci_disabled = 1;
 143         acpi_noirq_set();
 144 }
 145 extern int acpi_irq_balance_set(char *str);
 146 #else
 147 static inline void acpi_noirq_set(void) { }
 148 static inline void acpi_disable_pci(void) { }
 149 static inline int acpi_irq_balance_set(char *str) { return 0; }
 150 #endif
 151
 152 #ifdef CONFIG_ACPI_SLEEP
 153
 154 /* routines for saving/restoring kernel state */
 155 extern int acpi_save_state_mem(void);
 156 extern void acpi_restore_state_mem(void);
 157
 158 extern unsigned long acpi_wakeup_address;
 159
 160 /* early initialization routine */
 161 extern void acpi_reserve_bootmem(void);
 162
 163 #endif /*CONFIG_ACPI_SLEEP*/
 164
 165 #define boot_cpu_physical_apicid boot_cpu_id
 166
 167 extern int acpi_disabled;
 168 extern int acpi_pci_disabled;
 169
 170 extern u8 x86_acpiid_to_apicid[];
 171
 172 extern int acpi_skip_timer_override;
 173
 174 #endif /*__KERNEL__*/
 175
 176 #endif /*_ASM_ACPI_H*/