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