4 * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.
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.
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
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
31 #define COMPILER_DEPENDENT_INT64 long long
32 #define COMPILER_DEPENDENT_UINT64 unsigned long long
35 * Calling conventions:
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
42 #define ACPI_SYSTEM_XFACE
43 #define ACPI_EXTERNAL_XFACE
44 #define ACPI_INTERNAL_XFACE
45 #define ACPI_INTERNAL_VAR_XFACE
49 #define ACPI_ASM_MACROS
51 #define ACPI_DISABLE_IRQS() __cli()
52 #define ACPI_ENABLE_IRQS() __sti()
53 #define ACPI_FLUSH_CPU_CACHE() wbinvd()
56 __acpi_acquire_global_lock (unsigned int *lock
)
58 unsigned int old
, new, val
;
61 new = (((old
& ~0x3) + 2) + ((old
>> 1) & 0x1));
62 val
= cmpxchg(lock
, old
, new);
63 } while (unlikely (val
!= old
));
64 return (new < 3) ? -1 : 0;
68 __acpi_release_global_lock (unsigned int *lock
)
70 unsigned int old
, new, val
;
74 val
= cmpxchg(lock
, old
, new);
75 } while (unlikely (val
!= old
));
79 #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
80 ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
82 #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
83 ((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
86 * Math helper asm macros
88 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
90 :"=a"(q32), "=d"(r32) \
94 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
97 :"=r"(n_hi), "=r"(n_lo) \
98 :"0"(n_hi), "1"(n_lo))
99 #ifdef CONFIG_ACPI_PCI
100 extern int acpi_noirq
;
101 extern int acpi_pci_disabled
;
102 static inline void acpi_noirq_set(void) { acpi_noirq
= 1; }
103 static inline void acpi_disable_pci(void)
105 acpi_pci_disabled
= 1;
108 extern int acpi_irq_balance_set(char *str
);
110 static inline void acpi_noirq_set(void) { }
111 static inline void acpi_disable_pci(void) { acpi_noirq_set(); }
112 static inline int acpi_irq_balance_set(char *str
) { return 0; }
115 #ifdef CONFIG_ACPI_BOOT
116 extern int acpi_lapic
;
117 extern int acpi_ioapic
;
118 extern int acpi_strict
;
119 extern int acpi_disabled
;
121 extern int acpi_skip_timer_override
;
122 static inline void disable_acpi(void)
129 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
130 #define FIX_ACPI_PAGES 4
132 #else /* !CONFIG_ACPI_BOOT */
134 #define acpi_ioapic 0
135 #endif /* !CONFIG_ACPI_BOOT */
138 #ifdef CONFIG_ACPI_SLEEP
140 /* routines for saving/restoring kernel state */
141 extern int acpi_save_state_mem(void);
142 extern int acpi_save_state_disk(void);
143 extern void acpi_restore_state_mem(void);
145 extern unsigned long acpi_wakeup_address
;
147 /* early initialization routine */
148 extern void acpi_reserve_bootmem(void);
150 #endif /*CONFIG_ACPI_SLEEP*/
152 #define boot_cpu_physical_apicid boot_cpu_id
154 #endif /*__KERNEL__*/
156 #endif /*_ASM_ACPI_H*/