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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Venkatesh Pallipadi02df8b92005-04-15 15:07:10 -040031#include <acpi/pdc_intel.h>
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033#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
60static inline int
61__acpi_acquire_global_lock (unsigned int *lock)
62{
63 unsigned int old, new, val;
64 do {
65 old = *lock;
66 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
67 val = cmpxchg(lock, old, new);
68 } while (unlikely (val != old));
69 return (new < 3) ? -1 : 0;
70}
71
72static inline int
73__acpi_release_global_lock (unsigned int *lock)
74{
75 unsigned int old, new, val;
76 do {
77 old = *lock;
78 new = old & ~0x3;
79 val = cmpxchg(lock, old, new);
80 } while (unlikely (val != old));
81 return old & 0x1;
82}
83
84#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
85 ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
86
87#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
88 ((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
89
90/*
91 * Math helper asm macros
92 */
93#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
94 asm("divl %2;" \
95 :"=a"(q32), "=d"(r32) \
96 :"r"(d32), \
97 "0"(n_lo), "1"(n_hi))
98
99
100#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
101 asm("shrl $1,%2;" \
102 "rcrl $1,%3;" \
103 :"=r"(n_hi), "=r"(n_lo) \
104 :"0"(n_hi), "1"(n_lo))
105
Herbert Poetzl152475c2006-03-22 00:07:34 -0800106#ifdef CONFIG_X86_IO_APIC
107extern void check_acpi_pci(void);
108#else
109static inline void check_acpi_pci(void) { }
110#endif
111
Len Brown888ba6c2005-08-24 12:07:20 -0400112#ifdef CONFIG_ACPI
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113extern int acpi_lapic;
114extern int acpi_ioapic;
115extern int acpi_noirq;
116extern int acpi_strict;
117extern int acpi_disabled;
118extern int acpi_ht;
119extern int acpi_pci_disabled;
120static inline void disable_acpi(void)
121{
122 acpi_disabled = 1;
123 acpi_ht = 0;
124 acpi_pci_disabled = 1;
125 acpi_noirq = 1;
126}
127
128/* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
129#define FIX_ACPI_PAGES 4
130
131extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
132
133#ifdef CONFIG_X86_IO_APIC
134extern int skip_ioapic_setup;
135extern int acpi_skip_timer_override;
136
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137static inline void disable_ioapic_setup(void)
138{
139 skip_ioapic_setup = 1;
140}
141
142static inline int ioapic_setup_disabled(void)
143{
144 return skip_ioapic_setup;
145}
146
147#else
148static inline void disable_ioapic_setup(void) { }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149#endif
150
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
152static inline void acpi_disable_pci(void)
153{
154 acpi_pci_disabled = 1;
155 acpi_noirq_set();
156}
157extern int acpi_irq_balance_set(char *str);
Len Brown6153df72005-08-25 12:27:09 -0400158
159#else /* !CONFIG_ACPI */
160
161#define acpi_lapic 0
162#define acpi_ioapic 0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163static inline void acpi_noirq_set(void) { }
164static inline void acpi_disable_pci(void) { }
Len Brown6153df72005-08-25 12:27:09 -0400165
166#endif /* !CONFIG_ACPI */
167
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168
169#ifdef CONFIG_ACPI_SLEEP
170
171/* routines for saving/restoring kernel state */
172extern int acpi_save_state_mem(void);
173extern void acpi_restore_state_mem(void);
174
175extern unsigned long acpi_wakeup_address;
176
177/* early initialization routine */
178extern void acpi_reserve_bootmem(void);
179
180#endif /*CONFIG_ACPI_SLEEP*/
181
182extern u8 x86_acpiid_to_apicid[];
183
Venkatesh Pallipadi05131ec2005-10-23 16:31:00 -0400184#define ARCH_HAS_POWER_INIT 1
Venkatesh Pallipadi02df8b92005-04-15 15:07:10 -0400185
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186#endif /*__KERNEL__*/
187
188#endif /*_ASM_ACPI_H*/