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ACPI: avoid gcc warnings in ACPI mutex debug code
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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
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31#include <acpi/pdc_intel.h>
32
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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
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
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106#ifdef CONFIG_X86_IO_APIC
107extern void check_acpi_pci(void);
108#else
109static inline void check_acpi_pci(void) { }
110#endif
111
888ba6c6 112#ifdef CONFIG_ACPI
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113extern 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
1da177e4 134extern int acpi_skip_timer_override;
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135#endif
136
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137static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
138static inline void acpi_disable_pci(void)
139{
140 acpi_pci_disabled = 1;
141 acpi_noirq_set();
142}
143extern int acpi_irq_balance_set(char *str);
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144
145#else /* !CONFIG_ACPI */
146
147#define acpi_lapic 0
148#define acpi_ioapic 0
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149static inline void acpi_noirq_set(void) { }
150static inline void acpi_disable_pci(void) { }
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151
152#endif /* !CONFIG_ACPI */
153
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154
155#ifdef CONFIG_ACPI_SLEEP
156
157/* routines for saving/restoring kernel state */
158extern int acpi_save_state_mem(void);
159extern void acpi_restore_state_mem(void);
160
161extern unsigned long acpi_wakeup_address;
162
163/* early initialization routine */
164extern void acpi_reserve_bootmem(void);
165
166#endif /*CONFIG_ACPI_SLEEP*/
167
168extern u8 x86_acpiid_to_apicid[];
169
05131ecc 170#define ARCH_HAS_POWER_INIT 1
02df8b93 171
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172#endif /*__KERNEL__*/
173
174#endif /*_ASM_ACPI_H*/