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 extern void early_quirks(void);
85
86 #ifdef CONFIG_ACPI
87 extern int acpi_lapic;
88 extern int acpi_ioapic;
89 extern int acpi_noirq;
90 extern int acpi_strict;
91 extern int acpi_disabled;
92 extern int acpi_ht;
93 extern int acpi_pci_disabled;
disable_acpi(void)94 static inline void disable_acpi(void)
95 {
96 acpi_disabled = 1;
97 acpi_ht = 0;
98 acpi_pci_disabled = 1;
99 acpi_noirq = 1;
100 }
101
102 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
103 #define FIX_ACPI_PAGES 4
104
105 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
106
107 #ifdef CONFIG_X86_IO_APIC
108 extern int acpi_skip_timer_override;
109 extern int acpi_use_timer_override;
110 #endif
111
acpi_noirq_set(void)112 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
acpi_disable_pci(void)113 static inline void acpi_disable_pci(void)
114 {
115 acpi_pci_disabled = 1;
116 acpi_noirq_set();
117 }
118 extern int acpi_irq_balance_set(char *str);
119
120 /* routines for saving/restoring kernel state */
121 extern int acpi_save_state_mem(void);
122 extern void acpi_restore_state_mem(void);
123
124 extern unsigned long acpi_wakeup_address;
125
126 /* early initialization routine */
127 extern void acpi_reserve_bootmem(void);
128
129 #else /* !CONFIG_ACPI */
130
131 #define acpi_lapic 0
132 #define acpi_ioapic 0
acpi_noirq_set(void)133 static inline void acpi_noirq_set(void) { }
acpi_disable_pci(void)134 static inline void acpi_disable_pci(void) { }
disable_acpi(void)135 static inline void disable_acpi(void) { }
136
137 #endif /* !CONFIG_ACPI */
138
139 #define ARCH_HAS_POWER_INIT 1
140
141 #endif /*__KERNEL__*/
142
143 #endif /*_ASM_ACPI_H*/
144