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
59int __acpi_acquire_global_lock(unsigned int *lock);
60int __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
84extern void early_quirks(void);
85
86#ifdef CONFIG_ACPI
87extern int acpi_lapic;
88extern int acpi_ioapic;
89extern int acpi_noirq;
90extern int acpi_strict;
91extern int acpi_disabled;
92extern int acpi_ht;
93extern int acpi_pci_disabled;
94static 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
105extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
106
107#ifdef CONFIG_X86_IO_APIC
108extern int acpi_skip_timer_override;
109extern int acpi_use_timer_override;
110#endif
111
112static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
113static inline void acpi_disable_pci(void)
114{
115	acpi_pci_disabled = 1;
116	acpi_noirq_set();
117}
118extern int acpi_irq_balance_set(char *str);
119
120/* routines for saving/restoring kernel state */
121extern int acpi_save_state_mem(void);
122extern void acpi_restore_state_mem(void);
123
124extern unsigned long acpi_wakeup_address;
125
126/* early initialization routine */
127extern void acpi_reserve_bootmem(void);
128
129#else	/* !CONFIG_ACPI */
130
131#define acpi_lapic 0
132#define acpi_ioapic 0
133static inline void acpi_noirq_set(void) { }
134static inline void acpi_disable_pci(void) { }
135static 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